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diff --git a/lib/python2.7/site-packages/wx-3.0-msw/wx/py/sliceshell.py b/lib/python2.7/site-packages/wx-3.0-msw/wx/py/sliceshell.py
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+"""Slices is an interactive text control in which a user types in
+commands to be sent to the interpreter.  This particular shell is
+based on wxPython's wxStyledTextCtrl.
+
+Sponsored by Orbtech - Your source for Python programming expertise.
+Slices is a version of shell modified by David Mashburn."""
+
+__author__ = "David N. Mashburn <david.n.mashburn@gmail.com> / "
+__author__ += "Patrick K. O'Brien <pobrien@orbtech.com>"
+__cvsid__ = "$Id: sliceshell.py 60100 2009-04-12 02:56:29Z RD $"
+__revision__ = "$Revision: 60100 $"[11:-2]
+
+import wx
+from wx import stc
+
+import keyword
+import os
+import sys
+import time
+
+from buffer import Buffer
+import dispatcher
+import editor
+import editwindow
+import document
+import frame
+from pseudo import PseudoFileIn
+from pseudo import PseudoFileOut
+from pseudo import PseudoFileErr
+from version import VERSION
+from magic import magic
+from parse import testForContinuations
+from path import ls,cd,pwd,sx
+
+
+sys.ps3 = '<-- '  # Input prompt.
+USE_MAGIC=True
+# Force updates from long-running commands after this many seconds
+PRINT_UPDATE_MAX_TIME=2
+
+NAVKEYS = (wx.WXK_HOME, wx.WXK_END, wx.WXK_LEFT, wx.WXK_RIGHT,
+           wx.WXK_UP, wx.WXK_DOWN, wx.WXK_PRIOR, wx.WXK_NEXT)
+
+GROUPING_SELECTING=0
+IO_SELECTING = 1
+
+GROUPING_START = 2
+GROUPING_START_FOLDED = 3
+GROUPING_MIDDLE = 4
+GROUPING_END = 5
+INPUT_START = 6
+INPUT_START_FOLDED = 7
+INPUT_MIDDLE = 8
+INPUT_END = 9
+OUTPUT_START = 10
+OUTPUT_START_FOLDED = 11
+OUTPUT_MIDDLE = 12
+OUTPUT_END = 13
+
+OUTPUT_BG = 14
+READLINE_BG = 15
+INPUT_READLINE = 16
+
+# Could add C integration right into the markers...
+# Non-editable file marker for auto-loaded files...
+# Weave VariableInput = 15
+# Weave C code = 16
+# C code = 17 (only for use with Pyrex)
+# Pyrex / Cython code = 18
+
+GROUPING_MASK = ( 1<<GROUPING_START | 1<<GROUPING_START_FOLDED |
+                  1<<GROUPING_MIDDLE | 1<<GROUPING_END )
+
+INPUT_MASK = ( 1<<INPUT_START | 1<<INPUT_START_FOLDED |
+               1<<INPUT_MIDDLE | 1<<INPUT_END )
+OUTPUT_MASK = ( 1<<OUTPUT_START | 1<<OUTPUT_START_FOLDED |
+                1<<OUTPUT_MIDDLE | 1<<OUTPUT_END )
+IO_MASK = ( INPUT_MASK | OUTPUT_MASK )
+
+IO_START_MASK = ( 1<<INPUT_START | 1<<OUTPUT_START )
+IO_START_FOLDED_MASK = ( 1<<INPUT_START_FOLDED | 1<<OUTPUT_START_FOLDED )
+IO_ANY_START_MASK = ( 1<<INPUT_START | 1<<OUTPUT_START |
+                      1<<INPUT_START_FOLDED | 1<<OUTPUT_START_FOLDED )
+IO_MIDDLE_MASK = ( 1<<INPUT_MIDDLE | 1<<OUTPUT_MIDDLE )
+IO_END_MASK = ( 1<<INPUT_END | 1<<OUTPUT_END )
+
+usrBinEnvPythonText = '#!/usr/bin/env python2\n'
+pyslicesFormatHeaderText = ['#PySlices Save Format Version 1.1 (PySlices v0.9.7.8 and later)\n',
+                            '#PySlices Save Format Version 1.2 (PySlices v0.9.8 and later)\n']
+groupingStartText = '#PySlices Marker Information -- Begin Grouping Slice\n'
+inputStartText = '#PySlices Marker Information -- Begin Input Slice\n'
+outputStartText = '#PySlices Marker Information -- Begin Output Slice\n'
+
+tutorialText = """
+
+                            Tutorial!!!
+------------------------------------------------------------------------
+PySlices is the newest member of the Py suite!
+It is a modified version of PyCrust that supports multi-line commands.
+
+Input and output are contained in "Slices" shown as markers in the left margin.
+Input Slices have RED margins (active, editable).
+Output Slices have BLUE margins (frozen, not editable).
+
+Commands in slices can be on more than one line, as with Sage or Mathematica.
+For example, the command:
+a=1
+b=2
+print a+b
+will all run in sequence, much like a script.
+Try running the above Input Slice by clicking somewhere in its text and
+using Ctrl-Return, Shift-Return, or Numpad Enter to execute.
+Previous commands (Old Slices) can be re-edited and run again in place.
+
+Slices can also be:
+ * selceted (click on the margin, Shift-click for multiple selection)
+ * folded (click the margin twice)
+ * selected and deleted (hit delete while selected)
+ * divided (Ctrl-D)
+ * merged (Ctrl-M while selecting adjacent, like-colored slices)
+
+Try deleting the slice above this one by clicking on the red margin.
+
+If you want a more traditional shell feel, try enabling "Shell Mode" in
+"Options->Settings->Shell Mode" (or try PyCrust).
+In Shell Mode, two returns in a row executes the command, and
+    Ctrl-Return and Shift-Return always print newlines.
+
+Saving and opening "sessions" is now supported!  This is a little
+different to other shells where the history is saved.  With PySlices, 
+the whole document is saved in a simple text format!
+
+To disable this Tutorial on startup, uncheck it in the menu at:
+"Options->Startup->Show PySlices tutorial"
+
+PySlices may not be the best thing since sliced bread, but
+I hope it makes using Python a little bit sweeter!
+"""
+
+class SlicesShellFrame(frame.Frame, frame.ShellFrameMixin):
+    """Frame containing the sliceshell component."""
+
+    name = 'SlicesShell Frame'
+    revision = __revision__
+
+    def __init__(self, parent=None, id=-1, title='PySlicesShell',
+                 pos=wx.DefaultPosition, size=wx.DefaultSize,
+                 style=wx.DEFAULT_FRAME_STYLE, locals=None,
+                 InterpClass=None,
+                 config=None, dataDir=None, filename=None,
+                 *args, **kwds):
+        """Create SlicesShellFrame instance."""
+        frame.Frame.__init__(self, parent, id, title, pos, size, style,shellName='PySlices')
+        frame.ShellFrameMixin.__init__(self, config, dataDir)
+        
+        if size == wx.DefaultSize:
+            self.SetSize((750, 525))
+        
+        intro = 'PySlices %s - The Flakiest Python Shell... Cut Up!' % VERSION
+        self.SetStatusText(intro.replace('\n', ', '))
+        self.sliceshell = SlicesShell(parent=self, id=-1, introText=intro,
+                               locals=locals, InterpClass=InterpClass,
+                               startupScript=self.startupScript,
+                               execStartupScript=self.execStartupScript,
+                               showPySlicesTutorial=self.showPySlicesTutorial,
+                               enableShellMode=self.enableShellMode,
+                               hideFoldingMargin=self.hideFoldingMargin,
+                               *args, **kwds)
+        self.buffer = self.sliceshell.buffer
+
+        # Override the shell so that status messages go to the status bar.
+        self.sliceshell.setStatusText = self.SetStatusText
+
+        self.sliceshell.SetFocus()
+        self.LoadSettings()
+        
+        self.currentDirectory = os.path.expanduser('~')
+        
+        if filename!=None:
+            self.bufferOpen(filename)
+        
+        self.Bind(wx.EVT_IDLE, self.OnIdle)
+
+
+    def OnClose(self, event):
+        """Event handler for closing."""
+        self.bufferClose()
+        # This isn't working the way I want, but I'll leave it for now.
+        #if self.sliceshell.waiting:
+        #    if event.CanVeto():
+        #        event.Veto(True)
+        #else:
+        #    # TODO: Add check for saving
+        #    self.SaveSettings()
+        #    self.sliceshell.destroy()
+        #    self.Destroy()
+
+    def OnAbout(self, event):
+        """Display an About window."""
+        title = 'About PySliceShell'
+        text = 'PySliceShell %s\n\n' % VERSION + \
+               'Yet another Python shell, only flakier.\n\n' + \
+               'Half-baked by Patrick K. O\'Brien,\n' + \
+               'the other half is still in the oven.\n\n' + \
+               'Shell Revision: %s\n' % self.shell.revision + \
+               'Interpreter Revision: %s\n\n' % self.shell.interp.revision + \
+               'Platform: %s\n' % sys.platform + \
+               'Python Version: %s\n' % sys.version.split()[0] + \
+               'wxPython Version: %s\n' % wx.VERSION_STRING + \
+               ('\t(%s)\n' % ", ".join(wx.PlatformInfo[1:])) 
+        dialog = wx.MessageDialog(self, text, title,
+                                  wx.OK | wx.ICON_INFORMATION)
+        dialog.ShowModal()
+        dialog.Destroy()
+
+
+    def OnHelp(self, event):
+        """Show a help dialog."""
+        frame.ShellFrameMixin.OnHelp(self, event)
+
+
+    def LoadSettings(self):
+        if self.config is not None:
+            frame.ShellFrameMixin.LoadSettings(self)
+            frame.Frame.LoadSettings(self, self.config)
+            self.sliceshell.LoadSettings(self.config)
+
+    def SaveSettings(self, force=False):
+        if self.config is not None:
+            frame.ShellFrameMixin.SaveSettings(self,force)
+            if self.autoSaveSettings or force:
+                frame.Frame.SaveSettings(self, self.config)
+                self.sliceshell.SaveSettings(self.config)
+
+    def DoSaveSettings(self):
+        if self.config is not None:
+            self.SaveSettings(force=True)
+            self.config.Flush()
+    
+    def OnEnableShellMode(self,event):
+        """Change between Slices Mode and Shell Mode"""
+        frame.Frame.OnEnableShellMode(self,event)
+        self.sliceshell.ToggleShellMode(self.enableShellMode)
+    
+    def OnHideFoldingMargin(self,event):
+        """Change between Slices Mode and Shell Mode"""
+        frame.Frame.OnHideFoldingMargin(self,event)
+        self.sliceshell.ToggleFoldingMargin(self.hideFoldingMargin)
+    # Copied Straight from crustslices.py (update both with any changes...)
+    # Stolen Straight from editor.EditorFrame
+    # Modified a little... :)
+    # ||
+    # \/
+    def OnIdle(self, event):
+        """Event handler for idle time."""
+        self._updateTitle()
+        event.Skip()
+    
+    def _updateTitle(self):
+        """Show current title information."""
+        title = self.GetTitle()
+        if self.bufferHasChanged():
+            if title.startswith('* '):
+                pass
+            else:
+                self.SetTitle('* ' + title)
+        else:
+            if title.startswith('* '):
+                self.SetTitle(title[2:])
+    
+    def hasBuffer(self):
+        """Return True if there is a current buffer."""
+        if self.buffer:
+            return True
+        else:
+            return False
+
+    def bufferClose(self):
+        """Close buffer."""
+        if self.buffer.hasChanged():
+            cancel = self.bufferSuggestSave()
+            if cancel:
+                #event.Veto()
+                return cancel
+        self.SaveSettings()
+        self.sliceshell.destroy()
+        self.bufferDestroy()
+        self.Destroy()
+        
+        return False
+
+    def bufferCreate(self, filename=None):
+        """Create new buffer."""
+        self.bufferDestroy()
+        buffer = Buffer()
+        self.panel = panel = wx.Panel(parent=self, id=-1)
+        panel.Bind (wx.EVT_ERASE_BACKGROUND, lambda x: x)        
+        editor = Editor(parent=panel)
+        panel.editor = editor
+        sizer = wx.BoxSizer(wx.VERTICAL)
+        sizer.Add(editor.window, 1, wx.EXPAND)
+        panel.SetSizer(sizer)
+        panel.SetAutoLayout(True)
+        sizer.Layout()
+        buffer.addEditor(editor)
+        buffer.open(filename)
+        self.setEditor(editor)
+        self.editor.setFocus()
+        self.SendSizeEvent()
+        
+
+    def bufferDestroy(self):
+        """Destroy the current buffer."""
+        if self.buffer:
+            self.editor = None
+            self.buffer = None
+
+
+    def bufferHasChanged(self):
+        """Return True if buffer has changed since last save."""
+        if self.buffer:
+            return self.buffer.hasChanged()
+        else:
+            return False
+
+    def bufferNew(self):
+        """Create new buffer."""
+        cancel = self.bufferSuggestSave()
+        if cancel:
+            return cancel
+        #self.bufferCreate()
+        self.clear()
+        self.SetTitle( 'PySlices')
+        self.sliceshell.NeedsCheckForSave=False
+        self.sliceshell.SetSavePoint()
+        self.buffer.doc = document.Document()
+        self.buffer.name = 'This shell'
+        self.buffer.modulename = self.buffer.doc.filebase
+        cancel = False
+        return cancel
+
+    def bufferOpen(self,file=None):
+        """Open file in buffer."""
+        if self.bufferHasChanged():
+            cancel = self.bufferSuggestSave()
+            if cancel:
+                return cancel
+        
+        if file==None:
+            file=wx.FileSelector('Open a PySlices File',
+                                 wildcard='*.pyslices',
+                                 default_path=self.currentDirectory)
+        if file!=None and file!=u'':
+            fid=open(file,'r')
+            self.sliceshell.LoadPySlicesFile(fid)
+            fid.close()
+            self.currentDirectory = os.path.split(file)[0]
+            self.SetTitle( os.path.split(file)[1] + ' - PySlices')
+            self.sliceshell.NeedsCheckForSave=False
+            self.sliceshell.SetSavePoint()
+            self.buffer.doc = document.Document(file)
+            self.buffer.name = self.buffer.doc.filename
+            self.buffer.modulename = self.buffer.doc.filebase
+            self.sliceshell.ScrollToLine(0)
+        return
+    
+##     def bufferPrint(self):
+##         """Print buffer."""
+##         pass
+
+##     def bufferRevert(self):
+##         """Revert buffer to version of file on disk."""
+##         pass
+    
+    # was self.buffer.save(self): # """Save buffer."""
+    def simpleSave(self,confirmed=False):
+        filepath = self.buffer.doc.filepath
+        self.buffer.confirmed = confirmed
+        if not filepath:
+            return  # XXX Get filename
+        if not os.path.exists(filepath):
+            self.buffer.confirmed = True
+        if not self.buffer.confirmed:
+            self.buffer.confirmed = self.buffer.overwriteConfirm(filepath)
+        if self.buffer.confirmed:
+            try:
+                fid = open(filepath, 'wb')
+                self.sliceshell.SavePySlicesFile(fid)
+            finally:
+                if fid:
+                    fid.close()
+            self.sliceshell.SetSavePoint()
+            self.SetTitle( os.path.split(filepath)[1] + ' - PySlices')
+            self.sliceshell.NeedsCheckForSave=False
+    
+    def bufferSave(self):
+        """Save buffer to its file."""
+        if self.buffer.doc.filepath:
+            # self.buffer.save()
+            self.simpleSave(confirmed=True)
+            cancel = False
+        else:
+            cancel = self.bufferSaveAs()
+        return cancel
+
+    def bufferSaveAs(self):
+        """Save buffer to a new filename."""
+        if self.bufferHasChanged() and self.buffer.doc.filepath:
+            cancel = self.bufferSuggestSave()
+            if cancel:
+                return cancel
+        filedir = ''
+        if self.buffer and self.buffer.doc.filedir:
+            filedir = self.buffer.doc.filedir
+        result = editor.saveSingle(title='Save PySlices File',directory=filedir,
+                                   wildcard='PySlices Files (*.pyslices)|*.pyslices')
+        if result.path not in ['',None]:
+            if result.path[-9:]!=".pyslices":
+                result.path+=".pyslices"
+            
+            self.buffer.doc = document.Document(result.path)
+            self.buffer.name = self.buffer.doc.filename
+            self.buffer.modulename = self.buffer.doc.filebase
+            self.simpleSave(confirmed=True) # allow overwrite
+            cancel = False
+        else:
+            cancel = True
+        return cancel
+    
+    def bufferSaveACopy(self):
+        """Save buffer to a new filename."""
+        filedir = ''
+        if self.buffer and self.buffer.doc.filedir:
+            filedir = self.buffer.doc.filedir
+        result = editor.saveSingle(title='Save a Copy of PySlices File',directory=filedir,
+                                   wildcard='PySlices Files (*.pyslices)|*.pyslices')
+        
+        if result.path not in ['',None]:
+            if result.path[-9:]!=".pyslices":
+                result.path+=".pyslices"
+            
+            # if not os.path.exists(result.path):
+            try: # Allow overwrite...
+                fid = open(result.path, 'wb')
+                self.sliceshell.SavePySlicesFile(fid)
+            finally:
+                if fid:
+                    fid.close()
+                
+            cancel = False
+        else:
+            cancel = True
+        return cancel
+    
+    def bufferSuggestSave(self):
+        """Suggest saving changes.  Return True if user selected Cancel."""
+        result = editor.messageDialog(parent=None,
+                               message='%s has changed.\n'
+                                       'Would you like to save it first'
+                                       '?' % self.buffer.name,
+                               title='Save current file?',
+                               style=wx.YES_NO | wx.CANCEL | wx.NO_DEFAULT |
+                                     wx.CENTRE | wx.ICON_QUESTION )
+        if result.positive:
+            cancel = self.bufferSave()
+        else:
+            cancel = result.text == 'Cancel'
+        return cancel
+
+    def updateNamespace(self):
+        """Update the buffer namespace for autocompletion and calltips."""
+        if self.buffer.updateNamespace():
+            self.SetStatusText('Namespace updated')
+        else:
+            self.SetStatusText('Error executing, unable to update namespace')
+
+
+
+# TODO : Update the help text
+HELP_TEXT = """\
+* Key bindings:
+Home              Go to the beginning of the line.
+End               Go to the end of the line.
+Shift+Home        Select to the beginning of the line.
+Shift+End         Select to the end of the line.
+Ctrl-Home         Jump to the beginning of the slice;
+                  If already there, jump to beginning of previous slice
+Ctrl-End          Jump to the end of the slice;
+                  If already there, jump to end of next slice
+Ctrl-PageUp       Jump to the beginning of the shell
+Ctrl-PageDown     Jump to the end of the shell
+Ctrl+C            Copy selected text, removing prompts.
+Ctrl+Shift+C      Copy selected text, retaining prompts.
+Alt+C             Copy to the clipboard, including prefixed prompts.
+Ctrl+X            Cut selected text.
+Ctrl+V            Paste from clipboard.
+Ctrl+Shift+V      Paste and run multiple commands from clipboard.
+Ctrl+Up Arrow     Retrieve Previous History item.
+Alt+P             Retrieve Previous History item.
+Ctrl+Down Arrow   Retrieve Next History item.
+Alt+N             Retrieve Next History item.
+Shift+Up Arrow    Insert Previous History item.
+Shift+Down Arrow  Insert Next History item.
+F8                Command-completion of History item.
+                  (Type a few characters of a previous command and press F8.)
+Ctrl+]            Increase font size.
+Ctrl+[            Decrease font size.
+Ctrl+=            Default font size.
+
+Ctrl-Space        Show Auto Completion.
+Ctrl-Shift-Space  Show Call Tip.
+Ctrl-Shift-H      Complete Text from History.
+
+Ctrl+F            Search 
+Ctrl+G            Search next
+F12               on/off "free-edit" mode
+                  For testing only -- This does not preserve markers!
+
+In "Slices Mode":
+Return            Insert new line
+Enter (Numpad)    Run command in slice
+Ctrl+Return       ""
+Shift+Return      ""
+
+In "Shell Mode":
+Return or Enter   Insert a new line
+Ctrl+Return       ""
+Shift+Return      ""
+2 Returns in a row   Run command in slice
+"""
+
+class SlicesShellFacade:
+    """Simplified interface to all shell-related functionality.
+
+    This is a semi-transparent facade, in that all attributes of other
+    are accessible, even though only some are visible to the user."""
+
+    name = 'SlicesShell Interface'
+    revision = __revision__
+
+    def __init__(self, other):
+        """Create a SlicesShellFacade instance."""
+        d = self.__dict__
+        d['other'] = other
+        d['helpText'] = HELP_TEXT
+        d['this'] = other.this
+
+    def help(self):
+        """Display some useful information about how to use the slices shell."""
+        self.write(self.helpText,type='Output')
+
+    def __getattr__(self, name):
+        if hasattr(self.other, name):
+            return getattr(self.other, name)
+        else:
+            raise AttributeError, name
+
+    def __setattr__(self, name, value):
+        if self.__dict__.has_key(name):
+            self.__dict__[name] = value
+        elif hasattr(self.other, name):
+            setattr(self.other, name, value)
+        else:
+            raise AttributeError, name
+
+    def _getAttributeNames(self):
+        """Return list of magic attributes to extend introspection."""
+        list = [
+            'about',
+            'ask',
+            'autoCallTip',
+            'autoComplete',
+            'autoCompleteAutoHide',
+            'autoCompleteCaseInsensitive',
+            'autoCompleteIncludeDouble',
+            'autoCompleteIncludeMagic',
+            'autoCompleteIncludeSingle',
+            'callTipInsert',
+            'clear',
+            'pause',
+            'prompt',
+            'quit',
+            'redirectStderr',
+            'redirectStdin',
+            'redirectStdout',
+            'run',
+            'runfile',
+            'wrap',
+            'zoom',
+            ]
+        list.sort()
+        return list
+
+DISPLAY_TEXT="""
+Author: %r
+Py Version: %s
+Py Slices Shell Revision: %s
+Py Interpreter Revision: %s
+Python Version: %s
+wxPython Version: %s
+wxPython PlatformInfo: %s
+Platform: %s"""
+
+class SlicesShell(editwindow.EditWindow):
+    """Notebook Shell based on StyledTextCtrl."""
+
+    name = 'SlicesShell'
+    revision = __revision__
+
+    def __init__(self, parent, id=-1, pos=wx.DefaultPosition,
+                 size=wx.DefaultSize, style=wx.CLIP_CHILDREN,
+                 introText='', locals=None, InterpClass=None,
+                 startupScript=None, execStartupScript=True,
+                 showPySlicesTutorial=True,enableShellMode=False,
+                 hideFoldingMargin=False, *args, **kwds):
+        """Create Shell instance."""
+        editwindow.EditWindow.__init__(self, parent, id, pos, size, style)
+        self.wrap()
+        if locals is None:
+            import __main__
+            locals = __main__.__dict__
+
+        # Grab these so they can be restored by self.redirect* methods.
+        self.stdin = sys.stdin
+        self.stdout = sys.stdout
+        self.stderr = sys.stderr
+
+        # Import a default interpreter class if one isn't provided.
+        if InterpClass == None:
+            from interpreter import Interpreter
+        else:
+            Interpreter = InterpClass
+
+        # Create a replacement for stdin.
+        self.reader = PseudoFileIn(self.readline, self.readlines)
+        self.reader.input = ''
+        self.reader.isreading = False
+
+        # Set up the interpreter.
+        self.interp = Interpreter(locals=locals,
+                                  rawin=self.raw_input,
+                                  stdin=self.reader,
+                                  stdout=PseudoFileOut(self.writeOut),
+                                  stderr=PseudoFileErr(self.writeErr),
+                                  *args, **kwds)
+
+        # Set up the buffer.
+        self.buffer = Buffer()
+        self.id = self.GetId()
+        self.buffer.addEditor(self)
+        self.buffer.name='This shell'
+        self.NeedsCheckForSave=False
+        
+        # Find out for which keycodes the interpreter will autocomplete.
+        self.autoCompleteKeys = self.interp.getAutoCompleteKeys()
+
+        # Keep track of the last non-continuation prompt positions.
+        # Removed all references to these... solved a lot of odd bugs...
+        # self.promptPosStart = 0
+        # self.promptPosEnd = 0
+
+        # Keep track of multi-line commands.
+        self.more = False
+        
+        # Use Margins to track input / output / slice number
+        self.margins = True
+        
+        # For use with forced updates during long-running scripts
+        self.lastUpdate=None
+        
+        if self.margins:
+            # margin 1 is already defined for the line numbers
+            #  may eventually change it back to 0 like it ought to be...
+            self.SetMarginType(2, stc.STC_MARGIN_SYMBOL)
+            self.SetMarginType(3, stc.STC_MARGIN_SYMBOL)
+            self.SetMarginType(4, stc.STC_MARGIN_SYMBOL)
+            self.SetMarginWidth(2, 22)
+            self.SetMarginWidth(3, 22)
+            self.SetMarginWidth(4, 12)
+            self.SetMarginSensitive(2,True)
+            self.SetMarginSensitive(3,True)
+            self.SetMarginSensitive(4,True)
+            self.SetProperty("fold", "1")
+            # tabs are bad, use spaces
+            self.SetProperty("tab.timmy.whinge.level", "4")
+            self.SetMargins(0,0)
+            
+            
+            self.SetMarginMask(2, GROUPING_MASK | 1<<GROUPING_SELECTING )
+            # Display Markers -24...
+            self.SetMarginMask(3, IO_MASK | 1<<IO_SELECTING | 1<<READLINE_BG | 1<<INPUT_READLINE )
+            self.SetMarginMask(4, stc.STC_MASK_FOLDERS)
+            # Set the mask for the line markers, too...
+            self.SetMarginMask(1, 0)
+            
+            if hideFoldingMargin:
+                self.SetMarginWidth(4, 0)
+            self.hideFoldingMargin=hideFoldingMargin
+            
+            sel_color="#E0E0E0"
+            grouping_color="black"
+            input_color="red"
+            output_color="blue"
+            
+            self.MarkerDefine(GROUPING_SELECTING,    stc.STC_MARK_FULLRECT,
+                              sel_color, sel_color)
+            self.MarkerDefine(IO_SELECTING,          stc.STC_MARK_FULLRECT,
+                              sel_color, sel_color)
+            
+            self.MarkerDefine(GROUPING_START,        stc.STC_MARK_BOXMINUS,
+                              "white", grouping_color)
+            self.MarkerDefine(GROUPING_START_FOLDED, stc.STC_MARK_BOXPLUS,
+                              "white", grouping_color)
+            self.MarkerDefine(GROUPING_MIDDLE,       stc.STC_MARK_VLINE,
+                              "white", grouping_color)
+            self.MarkerDefine(GROUPING_END,          stc.STC_MARK_LCORNER,
+                              "white", grouping_color)
+            
+            self.MarkerDefine(READLINE_BG, stc.STC_MARK_FULLRECT,
+                              wx.Colour(191,191,191), wx.Colour(191,191,191))
+            self.MarkerDefine(INPUT_READLINE, stc.STC_MARK_CHARACTER+ord('<'),
+                              input_color, wx.Colour(191,191,191))
+            
+            if enableShellMode:
+                self.mode='ShellMode'
+            else:
+                self.mode='SlicesMode'
+            
+            self.execOnNextReturn=False
+            if self.mode=='SlicesMode':
+                self.MarkerDefine(INPUT_START,        stc.STC_MARK_BOXMINUS,
+                                  "white", input_color)
+                self.MarkerDefine(INPUT_START_FOLDED, stc.STC_MARK_BOXPLUS,
+                                  "white", input_color)
+                self.MarkerDefine(INPUT_MIDDLE,       stc.STC_MARK_VLINE,
+                                  "white", input_color)
+                self.MarkerDefine(INPUT_END,          stc.STC_MARK_LCORNER,
+                                  "white", input_color)
+            elif self.mode=='ShellMode':
+                self.MarkerDefine(INPUT_START,        stc.STC_MARK_ARROWS,
+                                  input_color, "white")
+                self.MarkerDefine(INPUT_START_FOLDED, stc.STC_MARK_BOXPLUS,
+                                  "white", input_color)
+                self.MarkerDefine(INPUT_MIDDLE,       stc.STC_MARK_DOTDOTDOT,
+                                  input_color, "white")
+                self.MarkerDefine(INPUT_END,          stc.STC_MARK_DOTDOTDOT,
+                                  input_color, "white")
+            
+            self.MarkerDefine(OUTPUT_START,           stc.STC_MARK_BOXMINUS,
+                              "white", output_color)
+            self.MarkerDefine(OUTPUT_START_FOLDED,    stc.STC_MARK_BOXPLUS,
+                              "white", output_color)
+            self.MarkerDefine(OUTPUT_MIDDLE,          stc.STC_MARK_VLINE,
+                              "white", output_color)
+            self.MarkerDefine(OUTPUT_END,             stc.STC_MARK_LCORNER,
+                              "white", output_color)
+            
+            self.MarkerDefine(OUTPUT_BG,             stc.STC_MARK_BACKGROUND,
+                              "white", wx.Colour(242,242,255))
+            
+            # Markers for folding margin...
+            self.MarkerDefine(stc.STC_MARKNUM_FOLDEROPEN,    stc.STC_MARK_BOXMINUS,
+                              "white", "#808080")
+            self.MarkerDefine(stc.STC_MARKNUM_FOLDER,        stc.STC_MARK_BOXPLUS,
+                              "white", "#808080")
+            self.MarkerDefine(stc.STC_MARKNUM_FOLDERSUB,     stc.STC_MARK_VLINE,
+                              "white", "#808080")
+            self.MarkerDefine(stc.STC_MARKNUM_FOLDERTAIL,    stc.STC_MARK_LCORNER,
+                              "white", "#808080")
+            self.MarkerDefine(stc.STC_MARKNUM_FOLDEREND,     stc.STC_MARK_BOXPLUSCONNECTED,
+                              "white", "#808080")
+            self.MarkerDefine(stc.STC_MARKNUM_FOLDEROPENMID, stc.STC_MARK_BOXMINUSCONNECTED,
+                              "white", "#808080")
+            self.MarkerDefine(stc.STC_MARKNUM_FOLDERMIDTAIL, stc.STC_MARK_TCORNER,
+                              "white", "#808080")
+
+        # Create the command history.  Commands are added into the
+        # front of the list (ie. at index 0) as they are entered.
+        # self.historyIndex is the current position in the history; it
+        # gets incremented as you retrieve the previous command,
+        # decremented as you retrieve the next, and reset when you hit
+        # Enter.  self.historyIndex == -1 means you're on the current
+        # command, not in the history.
+        self.history = []
+        self.historyIndex = -1
+
+        #DNM -- disable these markers...
+        #seb add mode for "free edit"
+        self.noteMode = 0
+        #self.MarkerDefine(0,stc.STC_MARK_ROUNDRECT)  # marker for hidden
+        self.searchTxt = ""
+
+        # Assign handlers for keyboard events.
+        self.Bind(wx.EVT_CHAR, self.OnChar)
+        self.Bind(wx.EVT_KEY_DOWN, self.OnKeyDown)
+        
+        self.Bind(wx.stc.EVT_STC_MARGINCLICK, self.OnMarginClick)
+        # TODO : Add a general functions to handle mouse clicks in the
+        # TODO:  STC window whose sole purpose is to make it so
+        # TODO:  that margin selection becomes unselected...
+
+        # Assign handler for the context menu
+        self.Bind(wx.EVT_CONTEXT_MENU, self.OnContextMenu)
+        self.Bind(wx.EVT_UPDATE_UI, self.OnUpdateUI)
+        
+        # Assign handlers for edit events
+        self.Bind(wx.EVT_MENU, lambda evt: self.Cut(), id=wx.ID_CUT)
+        self.Bind(wx.EVT_MENU, lambda evt: self.Copy(), id=wx.ID_COPY)
+        self.Bind(wx.EVT_MENU, lambda evt: self.CopyWithPrompts(), id=frame.ID_COPY_PLUS)
+        self.Bind(wx.EVT_MENU, lambda evt: self.Paste(), id=wx.ID_PASTE)
+        self.Bind(wx.EVT_MENU, lambda evt: self.PasteAndRun(), id=frame.ID_PASTE_PLUS)
+        self.Bind(wx.EVT_MENU, lambda evt: self.SelectAll(), id=wx.ID_SELECTALL)
+        self.Bind(wx.EVT_MENU, lambda evt: self.Clear(), id=wx.ID_CLEAR)
+        self.Bind(wx.EVT_MENU, lambda evt: self.Undo(), id=wx.ID_UNDO)
+        self.Bind(wx.EVT_MENU, lambda evt: self.Redo(), id=wx.ID_REDO)
+        
+        # Assign handler for idle time.
+        self.waiting = False
+        self.Bind(wx.EVT_IDLE, self.OnIdle)
+
+        # Display the introductory banner information.
+        self.showIntro(introText)
+        
+        outStart,outEnd,inStart,inMiddle,inEnd = [[],[],[],[],[]]
+        
+        # Make "executed startup script move to the top..."
+        if showPySlicesTutorial:
+            self.write(tutorialText,'Output')
+            tutStart=5
+            testStart=16
+            outStart=[tutStart,testStart+3]
+            outEnd=[tutStart-1,testStart-1]
+            inStart=[testStart]
+            inMiddle=[testStart+1]
+            inEnd=[testStart+2]
+        
+        # Assign some pseudo keywords to the interpreter's namespace.
+        self.setBuiltinKeywords()
+
+        # Add 'shell' to the interpreter's local namespace.
+        self.setLocalShell()
+        
+        # Do this last so the user has complete control over their
+        # environment.  They can override anything they want.
+        if execStartupScript:
+            if startupScript is None:
+                startupScript = os.environ.get('PYTHONSTARTUP')
+            self.execStartupScript(startupScript)
+        else:
+            self.prompt()
+        
+        outStart+=[0]
+        outEnd+=[self.GetLineCount()-2]
+        inStart+=[self.GetLineCount()-1]
+        # Set all the line markers to the proper initial states...
+        for i in range(self.GetLineCount()):
+            self.clearGroupingMarkers(i)
+            self.clearIOMarkers(i)
+            if i in outStart:
+                self.MarkerAdd(i,GROUPING_START)
+                self.MarkerAdd(i,OUTPUT_START)
+                # Background color is confusing for tutorial... skip it!
+                #self.MarkerAdd(i,OUTPUT_BG)
+            elif i in outEnd:
+                self.MarkerAdd(i,GROUPING_END)
+                self.MarkerAdd(i,OUTPUT_END)
+                #self.MarkerAdd(i,OUTPUT_BG)
+            elif i in inStart:
+                self.MarkerAdd(i,GROUPING_START)
+                self.MarkerAdd(i,INPUT_START)
+            elif i in inMiddle:
+                self.MarkerAdd(i,GROUPING_MIDDLE)
+                self.MarkerAdd(i,INPUT_MIDDLE)
+            elif i in inEnd:
+                self.MarkerAdd(i,GROUPING_END)
+                self.MarkerAdd(i,INPUT_END)
+            else:
+                self.MarkerAdd(i,GROUPING_MIDDLE)
+                self.MarkerAdd(i,OUTPUT_MIDDLE)
+                #self.MarkerAdd(i,OUTPUT_BG)
+        
+        self.SliceSelection=False
+        self.runningSlice=None
+        
+        ## NOTE:  See note at bottom of this file...
+        ## #seb: File drag and drop
+        ## self.SetDropTarget( FileDropTarget(self) )
+        
+        #ADD UNDO
+        # Everywhere "ADD UNDO" appears, there is new code to handle markers
+        self.EmptyUndoBuffer()
+        
+        wx.CallAfter(self.ScrollToLine, 0)
+
+    def ToggleShellMode(self,enableShellMode=None):
+        if enableShellMode==None:
+            if self.mode=='ShellMode':  self.mode='SlicesMode'
+            elif self.mode=='SlicesMode': self.mode='ShellMode'
+        elif enableShellMode:
+            self.mode='ShellMode'
+        else:
+            self.mode='SlicesMode'
+        
+        input_color="red"
+        if self.mode=='SlicesMode':
+            self.MarkerDefine(INPUT_START,           stc.STC_MARK_BOXMINUS,
+                              "white", input_color)
+            self.MarkerDefine(INPUT_START_FOLDED,    stc.STC_MARK_BOXPLUS,
+                              "white", input_color)
+            self.MarkerDefine(INPUT_MIDDLE,          stc.STC_MARK_VLINE,
+                              "white", input_color)
+            self.MarkerDefine(INPUT_END,             stc.STC_MARK_LCORNER,
+                              "white", input_color)
+        elif self.mode=='ShellMode':
+            self.MarkerDefine(INPUT_START,           stc.STC_MARK_ARROWS,
+                              input_color, "white")
+            self.MarkerDefine(INPUT_START_FOLDED,    stc.STC_MARK_BOXPLUS,
+                              "white", input_color)
+            self.MarkerDefine(INPUT_MIDDLE,          stc.STC_MARK_DOTDOTDOT,
+                              input_color, "white")
+            self.MarkerDefine(INPUT_END,             stc.STC_MARK_DOTDOTDOT,
+                              input_color, "white")
+    
+    def ToggleFoldingMargin(self,hideFoldingMargin=None):
+        if hideFoldingMargin==None:
+            self.hideFoldingMargin = not self.hideFoldingMargin
+        else:
+            self.hideFoldingMargin = hideFoldingMargin
+        
+        if self.hideFoldingMargin:
+            self.SetMarginWidth(4, 0)
+        else:
+            self.SetMarginWidth(4, 12)
+
+    def clearHistory(self):
+        self.history = []
+        self.historyIndex = -1
+        dispatcher.send(signal="SlicesShell.clearHistory")
+
+
+    def destroy(self):
+        del self.interp
+
+    def setFocus(self):
+        """Set focus to the slices shell."""
+        self.SetFocus()
+
+    def OnIdle(self, event):
+        """Free the CPU to do other things."""
+        if self.waiting:
+            time.sleep(0.05)
+        event.Skip()
+
+    def showIntro(self, text=''):
+        """Display introductory text in the slices shell."""
+        if text:
+            self.write(text,type='Output')
+        try:
+            if self.interp.introText:
+                if text and not text.endswith(os.linesep):
+                    self.write(os.linesep,type='Output')
+                self.write(self.interp.introText,type='Output')
+        except AttributeError:
+            pass
+    
+    def setBuiltinKeywords(self):
+        """Create pseudo keywords as part of builtins.
+
+        This sets "close", "exit" and "quit" to a helpful string.
+        """
+        import __builtin__
+        __builtin__.close = __builtin__.exit = __builtin__.quit = \
+            'Click on the close button to leave the application.'
+        __builtin__.cd = cd
+        __builtin__.ls = ls
+        __builtin__.pwd = pwd
+        __builtin__.sx = sx
+
+
+    def quit(self):
+        """Quit the application."""
+        # XXX Good enough for now but later we want to send a close event.
+        # In the close event handler we can make sure they want to
+        # quit.  Other applications, like PythonCard, may choose to
+        # hide rather than quit so we should just post the event and
+        # let the surrounding app decide what it wants to do.
+        self.write('Click on the close button to leave the application.',
+                   type='Output')
+
+
+    def setLocalShell(self):
+        """Add 'slicesshell' to locals as reference to ShellFacade instance."""
+        self.interp.locals['slicesshell'] = SlicesShellFacade(other=self)
+
+
+    def execStartupScript(self, startupScript):
+        """Execute the user's PYTHONSTARTUP script if they have one."""
+        if startupScript and os.path.isfile(startupScript):
+            text = 'Startup script executed: ' + startupScript
+            self.push('print %r; execfile(%r)' % (text, startupScript))
+            self.interp.startupScript = startupScript
+        else:
+            self.push('')
+
+
+    def about(self):
+        """Display information about Py."""
+        text = DISPLAY_TEXT % \
+        (__author__, VERSION, self.revision, self.interp.revision,
+         sys.version.split()[0], wx.VERSION_STRING, str(wx.PlatformInfo),
+         sys.platform)
+        self.write(text.strip(),type='Output')
+    
+    def BreakTextIntoCommands(self,text):
+        """Turn a text block into multiple multi-line commands."""
+        
+        #text = text.lstrip() # This should not be done!
+        text = self.fixLineEndings(text)
+        text = self.lstripPrompt(text)
+        text = text.replace(os.linesep, '\n')
+        lines = text.split('\n')
+        
+        continuations = testForContinuations(text)
+        
+        if len(continuations)==2: # Error case...
+            return None,continuations[1]
+        elif len(continuations)==4:
+            stringContinuationList,indentationBlockList, \
+            lineContinuationList,parentheticalContinuationList = continuations
+        
+        commands = []
+        command = ''
+        for j,line in enumerate(lines):
+            lstrip = line.lstrip()
+            
+            # Get the first alnum word:
+            first_word=[]
+            for i in lstrip:
+                if i.isalnum():
+                    first_word.append(i)
+                else:
+                    break
+            first_word = ''.join(first_word)
+            
+            # Continue the command if it is blank, has indentation,
+            # starts with else, elif,except, or finally
+            # or previous line had a line continuation \
+            
+            if j==0:
+                stringCont = False
+                lineCont=False
+            else:
+                stringCont = stringContinuationList[j-1]
+                lineCont = lineContinuationList[j-1]
+            
+            if line.strip() == '' or lstrip != line or \
+               first_word in ['else','elif','except','finally'] or \
+               stringCont or lineCont:
+                # Multiline command. Add to the command.
+                command += '\n'
+                command += line
+            else:
+                # New command.
+                if command:
+                    # Add the previous command to the list.
+                    commands.append(command)
+                # Start a new command, which may be multiline.
+                command = line
+        
+        commands.append(command)
+        
+        return commands
+    
+    def MarkerSet(self,line,markerBitsSet):
+        """MarkerSet is the Set command for MarkerGet"""
+        markerBits=self.MarkerGet(line)
+        
+        numMarkers=14
+        for i in range(numMarkers):
+            if (markerBitsSet & (1<<i)) and not (markerBits & (1<<i)):
+                self.MarkerAdd(line,i)
+            elif not (markerBitsSet & (1<<i)) and (markerBits & (1<<i)):
+                self.MarkerDelete(line,i)
+    def GetGroupingSlice(self,line_num=None):
+        """Get the start/stop lines for the slice based on any line in the slice"""
+        if line_num==None:
+            line_num=self.GetCurrentLine()
+        
+        num_lines=self.GetLineCount()
+        
+        for i in range(line_num,-1,-1):
+            if self.MarkerGet(i) & (1<<GROUPING_START | 1<<GROUPING_START_FOLDED):
+                break
+        start_line=i
+        
+        addition=0
+        
+        for i in range(line_num,num_lines):
+            if self.MarkerGet(i) & 1<<GROUPING_END:
+                break
+            elif (i>line_num) and ( self.MarkerGet(i)
+                         & (1<<GROUPING_START | 1<<GROUPING_START_FOLDED) ):
+                addition=-1
+                break # the solo case...
+        stop_line=i+addition
+        
+        return start_line,stop_line
+    
+    def GetIOSlice(self,line_num=None):
+        """Get the start/stop lines for the slice based on any line in the slice"""
+        if line_num==None:
+            line_num=self.GetCurrentLine()
+        
+        num_lines=self.GetLineCount()
+        
+        for i in range(line_num,-1,-1):
+            if self.MarkerGet(i) & IO_ANY_START_MASK:
+                break
+        start_line=i
+        
+        addition=0
+        
+        for i in range(line_num,num_lines):
+            if self.MarkerGet(i) & IO_END_MASK:
+                break
+            elif (i>line_num) and (self.MarkerGet(i) & IO_ANY_START_MASK):
+                addition=-1
+                break # the solo case...
+        stop_line=i+addition
+        
+        return start_line,stop_line
+    
+    def FoldGroupingSlice(self,line_num=None):
+        if line_num==None:
+            line_num=self.GetCurrentLine()
+        
+        start,end=self.GetGroupingSlice(line_num)
+        self.HideLines(start+1,end)
+        marker=self.MarkerGet(start)
+        self.clearGroupingMarkers(start)
+        self.MarkerAdd(start,GROUPING_START_FOLDED)
+        self.clearIOMarkers(start)
+        if marker & ( 1<<INPUT_START | 1<<INPUT_START_FOLDED ):
+            self.MarkerAdd(start,INPUT_START_FOLDED)
+        elif marker & ( 1<<OUTPUT_START | 1<<OUTPUT_START_FOLDED ):
+            self.MarkerAdd(start,OUTPUT_START_FOLDED)
+            self.MarkerAdd(start,OUTPUT_BG)
+        else:
+            pass #print 'Bad Markers!!!'
+    def FoldIOSlice(self,line_num=None):
+        if line_num==None:
+            line_num=self.GetCurrentLine()
+        
+        start,end=self.GetIOSlice(line_num)
+        self.HideLines(start+1,end)
+        marker=self.MarkerGet(start)
+        if (self.MarkerGet(start) & \
+               (1<<GROUPING_START | 1<<GROUPING_START_FOLDED )) and \
+               (self.MarkerGet(end) & 1<<GROUPING_END):
+            self.clearGroupingMarkers(start)
+            self.MarkerAdd(start,GROUPING_START_FOLDED)
+        self.clearIOMarkers(start)
+        if marker & ( 1<<INPUT_START | 1<<INPUT_START_FOLDED ):
+            self.MarkerAdd(start,INPUT_START_FOLDED)
+        elif marker & ( 1<<OUTPUT_START | 1<<OUTPUT_START_FOLDED ):
+            self.MarkerAdd(start,OUTPUT_START_FOLDED)
+            self.MarkerAdd(start,OUTPUT_BG)
+        else:
+            pass #print 'Bad Markers!!!'
+    def UnFoldGroupingSlice(self,line_num=None):
+        if line_num==None:
+            line_num=self.GetCurrentLine()
+        
+        start,end=self.GetGroupingSlice(line_num)
+        self.ShowLines(start+1,end)
+        self.clearGroupingMarkers(start)
+        self.MarkerAdd(start,GROUPING_START)
+        for i in range(start,end):
+            marker=self.MarkerGet(i)
+            if marker & (1<<INPUT_START | 1<<INPUT_START_FOLDED):
+                self.clearIOMarkers(i)
+                self.MarkerAdd(i,INPUT_START)
+            elif marker & (1<<OUTPUT_START | 1<<OUTPUT_START_FOLDED):
+                self.clearIOMarkers(i)
+                self.MarkerAdd(i,OUTPUT_START)
+                self.MarkerAdd(i,OUTPUT_BG)
+        
+    def UnFoldIOSlice(self,line_num=None):
+        if line_num==None:
+            line_num=self.GetCurrentLine()
+        
+        start,end=self.GetIOSlice(line_num)
+        self.ShowLines(start+1,end)
+        marker=self.MarkerGet(start)
+        if (self.MarkerGet(start) & \
+               (1<<GROUPING_START | 1<<GROUPING_START_FOLDED )) and \
+               (self.MarkerGet(end) & 1<<GROUPING_END):
+            self.clearGroupingMarkers(start)
+            self.MarkerAdd(start,GROUPING_START)
+        self.clearIOMarkers(start)
+        if marker & 1<<INPUT_START_FOLDED:
+            self.MarkerAdd(start,INPUT_START)
+        elif marker & 1<<OUTPUT_START_FOLDED:
+            self.MarkerAdd(start,OUTPUT_START)
+            self.MarkerAdd(start,OUTPUT_BG)
+    
+    def DeleteOutputSlicesAfter(self,line_num=None):
+        """Delete all outputs after an input"""
+        if line_num==None:
+            line_num=self.GetCurrentLine()
+        
+        num_lines=self.GetLineCount()
+        
+        if self.MarkerGet(line_num) & OUTPUT_MASK:
+            #print 'You can only run "DeleteOutputSlicesAfter" from an Input slice!'
+            return
+        
+        startIn,endIn=self.GetIOSlice(line_num)
+        startGrouping,endGrouping=self.GetGroupingSlice(line_num)
+        
+        if endIn<endGrouping:
+            self.SetSelection(self.PositionFromLine(endIn+1),
+                              self.PositionFromLine(endGrouping+1))
+            self.ReplaceSelection('',sliceDeletion=True)
+        
+        new_pos=self.GetLineEndPosition(line_num)
+        self.SetCurrentPos(new_pos)
+        self.SetSelection(new_pos,new_pos)
+    
+    def SplitSlice(self,line_num=None):
+        if line_num==None:
+            line_num=self.GetCurrentLine()
+        
+        start_num,end_num=self.GetIOSlice(line_num)
+        
+        if self.MarkerGet(line_num) & INPUT_MASK:
+            type='Input'
+            start=INPUT_START
+            end=INPUT_END
+            splitGrouping=True
+        elif self.MarkerGet(line_num) & OUTPUT_MASK:
+            type='Output'
+            start=OUTPUT_START
+            end=OUTPUT_END
+            splitGrouping=False
+        
+        if start_num==end_num:
+            return # Can't split one line!
+        elif start_num==line_num:
+            self.clearIOMarkers(line_num+1)
+            self.MarkerAdd(line_num+1,start)
+            if type=='Output': self.MarkerAdd(line_num+1,OUTPUT_BG)
+            if splitGrouping:
+                self.clearGroupingMarkers(line_num+1)
+                self.MarkerAdd(line_num+1,GROUPING_START)
+        else:
+            self.clearIOMarkers(line_num)
+            self.MarkerAdd(line_num,start)
+            if type=='Output': self.MarkerAdd(line_num,OUTPUT_BG)
+            if splitGrouping:
+                self.clearGroupingMarkers(line_num)
+                self.MarkerAdd(line_num,GROUPING_START)
+            if line_num-1>start_num:
+                self.clearIOMarkers(line_num-1)
+                self.MarkerAdd(line_num-1,end)
+                if type=='Output': self.MarkerAdd(line_num-1,OUTPUT_BG)
+                if splitGrouping:
+                    self.clearGroupingMarkers(line_num-1)
+                    self.MarkerAdd(line_num-1,GROUPING_END)
+    
+    def BackspaceWMarkers(self,force=False):
+        # Warning: This is not good at checking for bad markers!
+        c_before=self.GetCharAt(self.GetCurrentPos() - 1)
+        c_after=self.GetCharAt(self.GetCurrentPos())
+        
+        if c_before==0:
+            # Disallow deleting the first line or it will destroy the markers...
+            return False
+        elif c_before in (ord('\n'),ord('\r')):
+            line_num=self.GetCurrentLine()
+            
+            marker=self.MarkerGet(line_num)
+            marker_before=self.MarkerGet(line_num-1)
+            marker_after=self.MarkerGet(line_num+1)
+            if marker_before & ( 1<<GROUPING_END ) :
+                return False # Disallow deleting lines between slices...
+            elif marker & ( 1<<GROUPING_START | 1<<GROUPING_START_FOLDED ) :
+                return False # Disallow deleting lines between slices...
+            else:
+                if marker_before & ( 1<<GROUPING_START | 1<<GROUPING_START_FOLDED ) :
+                    self.clearGroupingMarkers(line_num)
+                elif marker & ( 1<<GROUPING_END ) :
+                    self.clearGroupingMarkers(line_num-1)
+            
+            if (marker_before & 1<<INPUT_END) and force:
+                # Special case for use in processLine
+                self.clearIOMarkers(line_num)
+            elif marker_before & (1<<INPUT_END | 1<<OUTPUT_END):
+                return False # Disallow deleting lines between slices...
+            elif marker & ( 1<<INPUT_START | 1<<INPUT_START_FOLDED ) :
+                return False # Disallow deleting lines between slices...
+            else:
+                if marker_before & (1<<INPUT_START  | 1<<INPUT_START_FOLDED |
+                                    1<<OUTPUT_START | 1<<OUTPUT_START_FOLDED):
+                    self.clearIOMarkers(line_num)
+                elif marker & ( 1<<INPUT_END | 1<<OUTPUT_END ) :
+                    self.clearIOMarkers(line_num-1)
+        
+        return True # If everything went well, return True and do the delete...
+    
+    def ForwardDeleteWMarkers(self):
+        c_before=self.GetCharAt(self.GetCurrentPos() - 1)
+        c_after=self.GetCharAt(self.GetCurrentPos())
+        if c_after==0:
+            # Disallow deleting the first line or it will destroy the markers...
+            return False
+        elif c_after in (ord('\n'),ord('\r')):
+            line_num=self.GetCurrentLine()
+            
+            marker=self.MarkerGet(line_num)
+            marker_before=self.MarkerGet(line_num-1)
+            marker_after=self.MarkerGet(line_num+1)
+            if marker & ( 1<<GROUPING_END ) :
+                return False # Disallow deleting lines between slices...
+            elif marker_after & ( 1<<GROUPING_START | 1<<GROUPING_START_FOLDED ) :
+                return False # Disallow deleting lines between slices...
+            else:
+                if marker & ( 1<<GROUPING_START | 1<<GROUPING_START_FOLDED ) :
+                    self.clearGroupingMarkers(line_num+1)
+                elif marker_after & ( 1<<GROUPING_END ) :
+                    self.clearGroupingMarkers(line_num)
+            
+            if marker & ( 1<<INPUT_END | 1<<OUTPUT_END ) :
+                return False # Disallow deleting lines between slices...
+            elif marker_after & ( 1<<INPUT_START | 1<<INPUT_START_FOLDED ) :
+                return False # Disallow deleting lines between slices...
+            else:
+                if marker & (1<<INPUT_START  | 1<<INPUT_START_FOLDED |
+                             1<<OUTPUT_START | 1<<OUTPUT_START_FOLDED) :
+                    self.clearIOMarkers(line_num+1)
+                elif marker_after & ( 1<<INPUT_END | 1<<OUTPUT_END ) :
+                    self.clearIOMarkers(line_num)
+        
+        return True
+    
+    def GetIOSelection(self):
+        started=False
+        start=0
+        end=self.GetLineCount()-1
+        type=None
+        for i in range(self.GetLineCount()):
+            if self.MarkerGet(i) & 1<<IO_SELECTING:
+                if started==False:
+                    start=i
+                    if self.MarkerGet(i) & INPUT_MASK:
+                        type='input'
+                    elif self.MarkerGet(i) & OUTPUT_MASK:
+                        type='output'
+                else:
+                    if self.MarkerGet(i) & INPUT_MASK:
+                        if type=='output':
+                            end=i-1
+                            break
+                    elif self.MarkerGet(i) & OUTPUT_MASK:
+                        if type=='input':
+                            end=i-1
+                            break
+                started=True
+            elif started==True:
+                end=i-1
+                break
+        
+        if started==False:
+            #print 'No Selection!!'
+            self.SliceSelection=False
+        
+        return start,end
+    
+    def MergeAdjacentSlices(self):
+        """This function merges all adjacent selected slices.\n""" + \
+        """Right now, only IO Merging is allowed."""
+        started=False
+        start=0
+        end=self.GetLineCount()-1
+        type=None
+        for i in range(self.GetLineCount()):
+            if self.MarkerGet(i) & 1<<IO_SELECTING:
+                if started==False:
+                    start=i
+                    if self.MarkerGet(i) & INPUT_MASK:
+                        type='input'
+                    elif self.MarkerGet(i) & OUTPUT_MASK:
+                        type='output'
+                else:
+                    if self.MarkerGet(i) & INPUT_MASK:
+                        if type=='output':
+                            end=i-1
+                            break
+                        else:
+                            self.clearIOMarkers(i)
+                            self.clearGroupingMarkers(i)
+                            self.MarkerAdd(i,INPUT_MIDDLE)
+                            self.MarkerAdd(i,GROUPING_MIDDLE)
+                    elif self.MarkerGet(i) & OUTPUT_MASK:
+                        if type=='input':
+                            end=i-1
+                            break
+                        else:
+                            self.clearIOMarkers(i)
+                            self.clearGroupingMarkers(i)
+                            self.MarkerAdd(i,OUTPUT_MIDDLE)
+                            self.MarkerAdd(i,OUTPUT_BG)
+                            self.MarkerAdd(i,GROUPING_MIDDLE)
+                started=True
+            elif started==True:
+                end=i-1
+                break
+        
+        if started and end!=start:
+            self.clearIOMarkers(end)
+            self.clearGroupingMarkers(end)
+            if type=='input':
+                self.MarkerAdd(end,INPUT_END)
+                if end+1<self.GetLineCount():
+                    if self.MarkerGet(end+1) & OUTPUT_MASK:
+                        self.MarkerAdd(end,GROUPING_MIDDLE)
+                    else:
+                        self.MarkerAdd(end,GROUPING_END)
+                else:
+                    self.MarkerAdd(end,GROUPING_END)
+            else:
+                if self.MarkerGet(start) & 1<<GROUPING_END:
+                    self.clearGroupingMarkers(start)
+                    self.MarkerAdd(start,GROUPING_MIDDLE)
+                self.MarkerAdd(end,OUTPUT_END)
+                self.MarkerAdd(end,OUTPUT_BG)
+                self.MarkerAdd(end,GROUPING_END)
+            
+    
+    def SliceSelectionDelete(self):
+        """Deletion of any selected and possibly discontinuous slices."""
+        if not self.SliceSelection:
+            return
+        
+        # collect the line numbers to be deleted...
+        selectedSlices=[]
+        start,end=None,None
+        for i in range(self.GetLineCount()):
+            if self.MarkerGet(i) & (1<<GROUPING_SELECTING | 1<<IO_SELECTING):
+                if start==None:
+                    start=i
+                end=i
+            elif start!=None:
+                selectedSlices.append([start,end])
+                start,end=None,None
+        if start!=None:
+            selectedSlices.append([start,end])
+        
+        # Unselect everything
+        self.MarginUnselectAll()
+        self.SliceSelection=False
+        
+        # Going in reverse, delete the selections, fixing the markers as we go...
+        for i in range(len(selectedSlices)-1,-1,-1):
+            self.SetSelection(self.PositionFromLine(selectedSlices[i][0]),
+                              self.GetLineEndPosition(selectedSlices[i][1])+1)
+            
+            markerNext = self.MarkerGet(selectedSlices[i][1]+1)
+            
+            self.ReplaceSelection('',sliceDeletion=True)
+            
+            cur_line=self.GetCurrentLine()
+            
+            # If we've made a mess of the grouping markers, clean it up...
+            if ((self.MarkerGet(cur_line-1) & 1<<GROUPING_END) and
+               (self.MarkerGet(cur_line) & ( 1<<GROUPING_MIDDLE | 1<<GROUPING_END ) )):
+                self.clearGroupingMarkers(cur_line)
+                self.MarkerAdd(cur_line,GROUPING_START)
+            elif (( self.MarkerGet(cur_line-1) & 1<<GROUPING_MIDDLE ) and
+                 ( self.MarkerGet(cur_line) &
+                      ( 1<<GROUPING_START | 1<<GROUPING_START_FOLDED ) )):
+                self.clearGroupingMarkers(cur_line-1)
+                self.MarkerAdd(cur_line-1,GROUPING_END)
+            
+            if markerNext & 1<<OUTPUT_START:
+                self.clearIOMarkers(cur_line)
+                self.MarkerAdd(cur_line,OUTPUT_START)
+                self.MarkerAdd(cur_line,OUTPUT_BG)
+            elif markerNext & 1<<OUTPUT_START_FOLDED:
+                self.clearIOMarkers(cur_line)
+                self.MarkerAdd(cur_line,OUTPUT_START_FOLDED)
+                self.MarkerAdd(cur_line,OUTPUT_BG)
+        
+        return
+    
+    def OnChar(self, event):
+        """Keypress event handler.
+
+        Only receives an event if OnKeyDown calls event.Skip() for the
+        corresponding event."""
+        
+        if self.noteMode:
+            event.Skip()
+            return
+
+        # Prevent modification of output slices
+        if not self.CanEdit():
+            return
+        key = event.GetKeyCode()
+        currpos = self.GetCurrentPos()
+        stoppos = self.PositionFromLine(self.GetCurrentLine())
+        
+        # Return (Enter) needs to be ignored in this handler.
+        if key in [wx.WXK_RETURN, wx.WXK_NUMPAD_ENTER]:
+            pass
+        elif key in self.autoCompleteKeys:
+            # Usually the dot (period) key activates auto completion.
+            # Get the command between the prompt and the cursor.  Add
+            # the autocomplete character to the end of the command.
+            if self.AutoCompActive():
+                self.AutoCompCancel()
+            command = self.GetTextRange(stoppos, currpos) + chr(key)
+            
+            # write with undo wrapper...
+            cpos=self.GetCurrentPos()
+            s=chr(key)
+            #ADD UNDO
+            self.UpdateUndoHistoryBefore('insert',s,cpos,cpos+len(s),
+                                         forceNewAction=False)
+            self.write(s,type='Input')
+            self.UpdateUndoHistoryAfter()
+            
+            if self.autoComplete:
+                self.autoCompleteShow(command)
+        elif key == ord('('):
+            # The left paren activates a call tip and cancels an
+            # active auto completion.
+            if self.AutoCompActive():
+                self.AutoCompCancel()
+            # Get the command between the prompt and the cursor.  Add
+            # the '(' to the end of the command.
+            self.ReplaceSelection('')
+            command = self.GetTextRange(stoppos, currpos) + '('
+            
+            # write with undo wrapper...
+            cpos=self.GetCurrentPos()
+            s='('
+            self.UpdateUndoHistoryBefore('insert',s,cpos,cpos+len(s),
+                                         forceNewAction=True)
+            self.undoHistory[self.undoIndex]['allowsAppend']=True
+            self.write(s,type='Input')
+            self.UpdateUndoHistoryAfter()
+            
+            self.autoCallTipShow(command,
+                                 self.GetCurrentPos() == self.GetTextLength())
+        else:
+            # Allow the normal event handling to take place.
+            # Use undo wrapper
+            cpos=self.GetCurrentPos()
+            try:
+                s=chr(key)
+                self.UpdateUndoHistoryBefore('insert',s,cpos,cpos+len(s))
+                event.Skip()
+                self.UpdateUndoHistoryAfter()
+            except:
+                event.Skip()
+    
+    def AutoCompActiveCallback(self):
+        numChars=self.GetTextLength()-self.TotalLengthForAutoCompActiveCallback
+        if numChars==0:
+            self.undoIndex-=1
+            del(self.undoHistory[-1])
+        else:
+            uH=self.undoHistory
+            uI=self.undoIndex
+            cpos=uH[uI]['posStart']
+            s=''.join([chr(self.GetCharAt(cpos+i)) for i in range(numChars)])
+            s.replace(os.linesep,'\n')
+            self.undoHistory[self.undoIndex]['charList'] = s
+            self.undoHistory[self.undoIndex]['posEnd'] = cpos + numChars
+            self.undoHistory[self.undoIndex]['numLines'] = len(s.split('\n'))
+            self.UpdateUndoHistoryAfter()
+    
+    def OnKeyDown(self, event):
+        """Key down event handler."""
+
+        key = event.GetKeyCode()
+        # If the auto-complete window is up let it do its thing.
+        if self.AutoCompActive():
+            if key in [wx.WXK_RETURN, wx.WXK_NUMPAD_ENTER]:
+                cpos=self.GetCurrentPos()
+                self.UpdateUndoHistoryBefore('insert','dummy',cpos,cpos+5,
+                                             forceNewAction=True)
+                self.undoHistory[self.undoIndex]['allowsAppend'] = True
+                self.TotalLengthForAutoCompActiveCallback=self.GetTextLength()
+                event.Skip()
+                wx.CallAfter(self.AutoCompActiveCallback)
+            if key in [wx.WXK_DELETE,wx.WXK_BACK]:
+                self.AutoCompCancel()
+            else:
+                event.Skip()
+            return
+        
+        #DNM
+        # Prevent modification of output slices
+        controlDown = event.ControlDown()
+        altDown = event.AltDown()
+        shiftDown = event.ShiftDown()
+        currpos = self.GetCurrentPos()
+        endpos = self.GetTextLength()
+        selecting = self.GetSelectionStart() != self.GetSelectionEnd()
+        
+        if key == wx.WXK_F12: #seb
+            if self.noteMode:
+                # self.promptPosStart not used anyway - or ? 
+##                # We don't need to do this any more!
+##                self.promptPosEnd = self.PositionFromLine(self.GetLineCount()-1 ) +
+##                                    len(str(sys.ps1))
+##                self.GotoLine(self.GetLineCount())
+##                self.GotoPos(self.promptPosEnd)
+##                self.prompt()  #make sure we have a prompt
+                self.SetCaretForeground("black")
+                self.SetCaretWidth(1)    #default
+                self.SetCaretPeriod(500) #default
+            else:
+                self.SetCaretForeground("red")
+                self.SetCaretWidth(4)
+                self.SetCaretPeriod(0) #steady
+
+            self.noteMode = not self.noteMode
+            return
+        if self.noteMode:
+            event.Skip()
+            return
+        
+        doLineBreak=False
+        doSubmitCommand=False
+        doPass=False
+        # Return is used to insert a line break.
+        # In Shell Mode, hit Return or Enter twice to submit a command
+        if ((not controlDown and not shiftDown and not altDown) and
+           key in [wx.WXK_RETURN,]):
+            if self.mode=='SlicesMode':
+                doLineBreak=True
+            elif self.mode=='ShellMode':
+                startLine,endLine = self.GetIOSlice()
+                startpos = self.PositionFromLine(startLine)
+                endpos = self.GetLineEndPosition(endLine)
+                command = self.GetTextRange(startpos, endpos)
+                strCont,indentBlock,lineCont,parenCont = testForContinuations(command,ignoreErrors=True)
+                
+                lastLine = command.split('\n')[-1]
+                if lastLine.lstrip()=='': # all whitespace...
+                    stillIndented=False
+                elif lastLine[0]==' ':
+                    stillIndented=True
+                else:
+                    stillIndented=False
+                
+                if strCont[-1] or indentBlock[-1] or lineCont[-1] or \
+                   parenCont[-1]:
+                    doLineBreak=True
+                elif stillIndented:
+                    new_pos=self.GetLineEndPosition(endLine)
+                    self.SetCurrentPos(new_pos)
+                    self.SetSelection(new_pos,new_pos)
+                    doLineBreak=True
+                elif self.GetCurrentLine()!=endLine:
+                    new_pos=self.GetLineEndPosition(endLine)
+                    self.SetCurrentPos(new_pos)
+                    self.SetSelection(new_pos,new_pos)
+                    doPass = True
+                else:
+                    doSubmitCommand=True
+        # Enter (Shift/Ctrl + Enter/Return) submits a command to the interpreter.
+        # In Shell Mode, hit Return or Enter twice to submit a command
+        elif ( key in [wx.WXK_NUMPAD_ENTER,] or
+            ( (shiftDown or controlDown) and key in [wx.WXK_RETURN,
+                                                     wx.WXK_NUMPAD_ENTER] ) ):
+            if self.mode=='SlicesMode':
+                doSubmitCommand=True
+            elif self.mode=='ShellMode':
+                doLineBreak=True
+        
+        #Only relevant in ShellMode...
+        
+        if doPass:
+            pass
+        elif doLineBreak or doSubmitCommand:
+            if self.CallTipActive():
+                self.CallTipCancel()
+            elif self.SliceSelection:
+                for i in range(self.GetLineCount()):
+                    if self.MarkerGet(i) & 1<<GROUPING_SELECTING:
+                        self.DoMarginClick(i, 2, shiftDown, controlDown)
+                        break
+                    elif self.MarkerGet(i) & 1<<IO_SELECTING:
+                        self.DoMarginClick(i, 3, shiftDown, controlDown)
+                        break
+            elif doLineBreak:
+                self.insertLineBreak()
+                #Only relevant in ShellMode...
+            elif doSubmitCommand:
+                self.DeleteOutputSlicesAfter()
+                self.processLine()
+        
+        # Let Ctrl-Alt-* get handled normally.
+        elif controlDown and altDown:
+            event.Skip()
+        
+        # Clear the current, unexecuted command.
+        elif key == wx.WXK_ESCAPE:
+            if self.CallTipActive():
+                event.Skip()
+        # Clear the current command
+        elif key == wx.WXK_BACK and controlDown and shiftDown:
+            self.clearCommand()
+
+        # Increase font size.
+        elif controlDown and key in (ord(']'), wx.WXK_NUMPAD_ADD):
+            dispatcher.send(signal='FontIncrease')
+
+        # Decrease font size.
+        elif controlDown and key in (ord('['), wx.WXK_NUMPAD_SUBTRACT):
+            dispatcher.send(signal='FontDecrease')
+
+        # Default font size.
+        elif controlDown and key in (ord('='), wx.WXK_NUMPAD_DIVIDE):
+            dispatcher.send(signal='FontDefault')
+
+        # Cut to the clipboard.
+        elif (controlDown and key in (ord('X'), ord('x'))) \
+                 or (shiftDown and key == wx.WXK_DELETE):
+            self.Cut()
+
+        # Copy to the clipboard.
+        elif controlDown and not shiftDown \
+                 and key in (ord('C'), ord('c'), wx.WXK_INSERT):
+            self.Copy()
+
+        # Copy to the clipboard, including prompts.
+        elif controlDown and shiftDown \
+                 and key in (ord('C'), ord('c'), wx.WXK_INSERT):
+            self.CopyWithPrompts()
+
+        # Copy to the clipboard, including prefixed prompts.
+        elif altDown and not controlDown \
+                 and key in (ord('C'), ord('c'), wx.WXK_INSERT):
+            self.CopyWithPromptsPrefixed()
+        
+        # Home needs to be aware of the prompt.
+        elif controlDown and key == wx.WXK_HOME:
+            # Go to the beginning of the IO Slice
+            curLine = self.GetCurrentLine()
+            IOstart = self.GetIOSlice(curLine)[0]
+            home = self.PositionFromLine(IOstart)
+            if currpos == home and \
+               IOstart > 0:
+                home = self.PositionFromLine(self.GetIOSlice(curLine-1)[0])
+            self.SetCurrentPos(home)
+            if not selecting and not shiftDown:
+                self.SetAnchor(home)
+                self.EnsureCaretVisible()
+
+        elif controlDown and key == wx.WXK_END:
+            curLine = self.GetCurrentLine()
+            IOend = self.GetIOSlice(curLine)[1]
+            end = self.GetLineEndPosition(IOend)
+            if currpos == end and \
+               IOend < self.GetLineCount()-1:
+                end = self.GetLineEndPosition(self.GetIOSlice(curLine+1)[1])
+            self.SetCurrentPos(end)
+            if not selecting and not shiftDown:
+                self.SetAnchor(end)
+                self.EnsureCaretVisible()
+        
+        elif controlDown and key == wx.WXK_PAGEUP:
+            pos=0
+            if currpos > pos:
+                self.SetCurrentPos(pos)
+                if not selecting and not shiftDown:
+                    self.SetAnchor(pos)
+                    self.EnsureCaretVisible()
+        
+        elif controlDown and key == wx.WXK_PAGEDOWN:
+            pos = self.GetLineEndPosition(self.GetLineCount()-1)
+            if currpos < pos:
+                self.SetCurrentPos(pos)
+                if not selecting and not shiftDown:
+                    self.SetAnchor(pos)
+                    self.EnsureCaretVisible()
+        
+        elif selecting and key not in NAVKEYS and not self.CanEdit():
+            pass
+
+        # Paste from the clipboard.
+        elif (controlDown and not shiftDown and key in (ord('V'), ord('v'))) \
+                 or (shiftDown and not controlDown and key == wx.WXK_INSERT):
+            self.Paste()
+
+        # Paste from the clipboard, run commands.
+        elif controlDown and shiftDown and \
+                             key in (ord('V'), ord('v')) and self.CanEdit():
+            self.PasteAndRun()
+            
+        # Replace with the previous command from the history buffer.
+        elif (controlDown and not shiftDown and key == wx.WXK_UP) \
+              or (altDown and key in (ord('P'), ord('p'))) and self.CanEdit():
+            self.OnHistoryReplace(step=+1)
+            
+        # Replace with the next command from the history buffer.
+        elif (controlDown and not shiftDown and key == wx.WXK_DOWN) \
+              or (altDown and key in (ord('N'), ord('n'))) and self.CanEdit():
+            self.OnHistoryReplace(step=-1)
+            
+        # Insert the previous command from the history buffer.
+        elif (controlDown and shiftDown and key == wx.WXK_UP) and \
+              self.CanEdit():
+            self.OnHistoryInsert(step=+1)
+            
+        # Insert the next command from the history buffer.
+        elif (controlDown and shiftDown and key == wx.WXK_DOWN) and \
+              self.CanEdit():
+            self.OnHistoryInsert(step=-1)
+            
+        # Ctrl-Space shows Auto Completion
+        # Ctrl-Shift-Space shows CallTips
+        elif controlDown and key == wx.WXK_SPACE:
+            self.OnCallTipAutoCompleteManually(shiftDown)
+        
+        # Ctrl+Shift+H is used to complete Text (from already typed words)
+        elif controlDown and shiftDown and key in [ord('H')]:
+            self.OnShowCompHistory()
+        
+        # Search up the history for the text in front of the cursor.
+        elif key == wx.WXK_F8:
+            self.OnHistorySearch()
+            
+        # Don't backspace over the latest non-continuation prompt.
+        elif key == wx.WXK_BACK:
+            if self.SliceSelection:
+                self.SliceSelectionDelete()
+                wx.CallAfter(self.RestoreFirstMarker)
+            elif selecting and self.CanEdit():
+                self.ReplaceSelection('')
+                #event.Skip()
+            elif self.CanEdit():
+                doDelete=True
+                cur_line=self.GetCurrentLine()
+                if not cur_line==0 and \
+                   self.GetCurrentPos()==self.PositionFromLine(cur_line):
+                    if self.MarkerGet(cur_line-1) & OUTPUT_MASK:
+                        doDelete=False
+                
+                if doDelete:
+                    cpos=self.GetCurrentPos()
+                    s=chr(self.GetCharAt(cpos-1))
+                    self.UpdateUndoHistoryBefore('delete',s,cpos-1,cpos)
+                    if self.BackspaceWMarkers():
+                        event.Skip()
+                
+                wx.CallAfter(self.RestoreFirstMarker)
+        
+        elif key == wx.WXK_DELETE:
+            if self.SliceSelection:
+                self.SliceSelectionDelete()
+                wx.CallAfter(self.RestoreFirstMarker)
+            elif selecting and self.CanEdit():
+                self.ReplaceSelection('')
+                #event.Skip()
+            elif self.CanEdit():
+                doDelete=True
+                cur_line=self.GetCurrentLine()
+                if not cur_line==self.GetLineCount()-1 and \
+                   self.GetCurrentPos()==self.GetLineEndPosition(cur_line):
+                    if self.MarkerGet(cur_line+1) & OUTPUT_MASK:
+                        doDelete=False
+                
+                if doDelete:
+                    cpos=self.GetCurrentPos()
+                    s=chr(self.GetCharAt(cpos))
+                    self.UpdateUndoHistoryBefore('delete',s,cpos,cpos+1)
+                    if self.ForwardDeleteWMarkers():
+                        event.Skip()
+                
+                wx.CallAfter(self.RestoreFirstMarker)
+        
+        # Only allow these keys after the latest prompt.
+        elif key == wx.WXK_TAB and self.CanEdit():
+            # use the same mechanism as with autocmplete...
+            cpos=self.GetCurrentPos()
+            self.UpdateUndoHistoryBefore('insert','dummy',cpos,cpos+5,
+                                         forceNewAction=True)
+            self.undoHistory[self.undoIndex]['allowsAppend'] = True
+            self.TotalLengthForAutoCompActiveCallback=self.GetTextLength()
+            event.Skip()
+            wx.CallAfter(self.AutoCompActiveCallback)
+        
+        # Don't toggle between insert mode and overwrite mode.
+        elif key == wx.WXK_INSERT:
+            pass
+        
+        # Don't allow line deletion.
+        #elif controlDown and key in (ord('L'), ord('l')):
+            # TODO : Allow line deletion eventually ??
+            #event.Skip()
+        #    pass
+        
+        # Don't allow line transposition.
+        # Toggle Shell Mode / Slices Mode
+        elif controlDown and key in (ord('T'), ord('t')):
+            self.ToggleShellMode()
+        
+        #Open and Save now work when using CrustSlicesFrames
+        elif controlDown and key in (ord('L'), ord('l')):
+            #print 'Load it'
+            file=wx.FileSelector("Load File As New Slice")
+            if file!=u'':
+                fid=open(file,'r')
+                self.LoadPyFileAsSlice(fid)
+                fid.close()
+        
+        elif controlDown and key in (ord('D'), ord('d')):
+            #Disallow line duplication in favor of divide slices
+            if self.MarkerGet(self.GetCurrentLine()) & INPUT_MASK:
+                #ADD UNDO
+                cpos=self.GetCurrentPos()
+                start,end = map(self.PositionFromLine,
+                              self.GetGroupingSlice(self.LineFromPosition(cpos)))
+                self.UpdateUndoHistoryBefore('marker','',start,end,
+                                             forceNewAction=True)
+                self.SplitSlice()
+                # Turn off selecting
+                self.SetSelection(cpos,cpos)
+                self.ReplaceSelection('')
+                self.UpdateUndoHistoryAfter()
+        
+        elif controlDown and key in (ord('M'), ord('m')):
+            #ADD UNDO
+            if self.SliceSelection:
+                cpos=self.GetCurrentPos()
+                ioSel=self.GetIOSelection()
+            if self.SliceSelection:
+                start,end = map(self.PositionFromLine,ioSel)
+                self.UpdateUndoHistoryBefore('marker','',start,end,
+                                             forceNewAction=True)
+                self.MergeAdjacentSlices()
+                # Turn off selecting
+                self.SetSelection(cpos,cpos)
+                self.ReplaceSelection('')
+                self.UpdateUndoHistoryAfter()
+            
+        
+        # Change arrow keys to allow margin behaviors...
+        elif self.SliceSelection and \
+             key in [wx.WXK_UP,wx.WXK_DOWN,wx.WXK_RIGHT,wx.WXK_LEFT]:
+        # TODO : This is useful, but not optimal!
+            if key==wx.WXK_UP:
+                for i in range(self.GetLineCount()):
+                    if self.MarkerGet(i) & 1<<GROUPING_SELECTING:
+                        if i>0:                     #Grouping
+                            self.DoMarginClick(i-1, 2, shiftDown, controlDown)
+                        break
+                    elif self.MarkerGet(i) & 1<<IO_SELECTING:
+                        if i>0:                     #IO
+                            self.DoMarginClick(i-1, 3, shiftDown, controlDown)
+                        break
+            elif key==wx.WXK_DOWN:
+                for i in range(self.GetLineCount()-1,-1,-1):
+                    if self.MarkerGet(i) & 1<<GROUPING_SELECTING:
+                        if i<self.GetLineCount()-1: #Grouping
+                            self.DoMarginClick(i+1, 2, shiftDown, controlDown)
+                        break
+                    elif self.MarkerGet(i) & 1<<IO_SELECTING:
+                        if i<self.GetLineCount()-1: #IO
+                            self.DoMarginClick(i+1, 3, shiftDown, controlDown)
+                        break
+            elif key==wx.WXK_RIGHT:
+                for i in range(self.GetLineCount()):
+                    if self.MarkerGet(i) & 1<<GROUPING_SELECTING:
+                        self.DoMarginClick(i, 3, shiftDown, controlDown)
+                        break
+                    elif self.MarkerGet(i) & 1<<IO_SELECTING:
+                        self.MarginUnselectAll()
+                        # Go to the beginning of the IO Slice
+                        self.SetCurrentPos(self.PositionFromLine(i))
+                        if not selecting and not shiftDown:
+                            self.SetAnchor(self.PositionFromLine(i))
+                            self.EnsureCaretVisible()
+                        break
+            elif key==wx.WXK_LEFT:
+                for i in range(self.GetLineCount()):
+                    if self.MarkerGet(i) & 1<<GROUPING_SELECTING:
+                        break
+                    elif self.MarkerGet(i) & 1<<IO_SELECTING:
+                        self.DoMarginClick(i, 2, shiftDown, controlDown)
+                        break
+        # Basic navigation keys should work anywhere.
+        elif key in NAVKEYS:
+            event.Skip()
+        # Protect the readonly portion of the slices shell.
+        elif not self.CanEdit():
+            pass
+        else:
+            # Check to see if we're selecting
+            if self.GetSelectionEnd()>self.GetSelectionStart():
+                # Check to see if a normal input took place
+                if not controlDown and not altDown and key<256:
+                    self.ReplaceSelection('') # This seems to work...
+            event.Skip()
+        
+        if self.SliceSelection:
+            if key not in [wx.WXK_UP,wx.WXK_DOWN,wx.WXK_RIGHT,wx.WXK_LEFT,
+                           wx.WXK_ALT,wx.WXK_COMMAND,wx.WXK_CONTROL,wx.WXK_SHIFT]:
+                self.MarginUnselectAll()
+    
+    
+    def MarginSelectAll(self):
+        num_lines=self.GetLineCount()
+        for i in range(num_lines):
+            self.MarkerAdd(i,GROUPING_SELECTING)
+            self.MarkerDelete(i,IO_SELECTING)
+    
+    def MarginUnselectAll(self):
+        num_lines=self.GetLineCount()
+        for i in range(num_lines):
+            self.MarkerDelete(i,IO_SELECTING)
+            self.MarkerDelete(i,GROUPING_SELECTING)
+        self.SliceSelection=False
+    
+    def DoMarginClick(self, lineClicked, margin, shiftDown, controlDown):
+        num_lines=self.GetLineCount()
+        
+        if margin==1:
+            pass # these events are not sent right now...
+        if margin==2:
+            self.SliceSelection=True
+            start,end=self.GetGroupingSlice(lineClicked)
+            startPos=self.PositionFromLine(start)
+            self.SetCurrentPos(startPos)
+            self.SetSelection(startPos,startPos)
+            start_marker=self.MarkerGet(start)
+            if self.MarkerGet(lineClicked) & 1<<GROUPING_SELECTING:
+                toggle=self.MarkerDelete
+                if not shiftDown:
+                    if start_marker & 1<<GROUPING_START:
+                        self.FoldGroupingSlice(lineClicked)
+                    elif start_marker & 1<<GROUPING_START_FOLDED:
+                        self.UnFoldGroupingSlice(lineClicked)
+            else:
+                toggle=self.MarkerAdd
+            
+            if not shiftDown:
+                self.MarginUnselectAll()
+            
+            for i in range(start,end+1):
+                toggle(i,GROUPING_SELECTING)
+        elif margin==3:
+            self.SliceSelection=True
+            start,end=self.GetIOSlice(lineClicked)
+            startPos=self.PositionFromLine(start)
+            self.SetCurrentPos(startPos)
+            self.SetSelection(startPos,startPos)
+            start_marker=self.MarkerGet(start)
+            if self.MarkerGet(lineClicked) & 1<<IO_SELECTING:
+                toggle=self.MarkerDelete
+                if not shiftDown:
+                    if start_marker & IO_START_MASK:
+                        self.FoldIOSlice(lineClicked)
+                    elif start_marker & IO_START_FOLDED_MASK:
+                        self.UnFoldIOSlice(lineClicked)
+            else:
+                toggle=self.MarkerAdd
+            
+            if not shiftDown:
+                self.MarginUnselectAll()
+            
+            for i in range(start,end+1):
+                toggle(i,IO_SELECTING)
+            
+            #print start,end
+            
+        elif margin==4:
+            # TODO : Folding ??
+            if 1:#self.MarkerGet(lineClicked) & ( 1<<7 | 1<<8 ):
+                if shiftDown:
+                    self.SetFoldExpanded(lineClicked, True)
+                    self.Expand(lineClicked, True, True, 1)
+                elif controlDown:
+                    if self.GetFoldExpanded(lineClicked):
+                        self.SetFoldExpanded(lineClicked, False)
+                        self.Expand(lineClicked, False, True, 0)
+                    else:
+                        self.SetFoldExpanded(lineClicked, True)
+                        self.Expand(lineClicked, True, True, 100)
+                else:
+                    self.ToggleFold(lineClicked)
+        else:
+            self.MarginUnselectAll()
+        if margin in [2,3]:
+            if toggle==self.MarkerDelete and not shiftDown:
+                self.SliceSelection=False
+            else:
+                self.SliceSelection=True
+    
+    def OnMarginClick(self, evt):
+        
+        # fold and unfold as neededNAVKEYS
+        lineClicked = self.LineFromPosition(evt.GetPosition())
+        self.DoMarginClick(lineClicked,evt.GetMargin(),evt.GetShift(),evt.GetControl())
+        evt.Skip()
+
+    def OnShowCompHistory(self):
+        """Show possible autocompletion Words from already typed words."""
+        
+        #copy from history
+        his = self.history[:]
+        
+        #put together in one string
+        joined = " ".join (his)
+        import re
+
+        #sort out only "good" words
+        newlist = re.split("[ \.\[\]=}(\)\,0-9\"]", joined)
+        
+        #length > 1 (mix out "trash")
+        thlist = []
+        for i in newlist:
+            if len (i) > 1:
+                thlist.append (i)
+        
+        #unique (no duplicate words
+        #oneliner from german python forum => unique list
+        unlist = [thlist[i] for i in xrange(len(thlist)) if thlist[i] not in thlist[:i]]
+            
+        #sort lowercase
+        unlist.sort(lambda a, b: cmp(a.lower(), b.lower()))
+        
+        #this is more convenient, isn't it?
+        self.AutoCompSetIgnoreCase(True)
+        
+        #join again together in a string
+        stringlist = " ".join(unlist)
+
+        #pos von 0 noch ausrechnen
+
+        #how big is the offset?
+        cpos = self.GetCurrentPos() - 1
+        while chr (self.GetCharAt (cpos)).isalnum():
+            cpos -= 1
+            
+        #the most important part
+        self.AutoCompShow(self.GetCurrentPos() - cpos -1, stringlist)
+    
+    def ReplaceSelection(self,text,sliceDeletion=False,*args,**kwds):
+        startIO,endIO=self.GetIOSlice()
+        startGrouping,endGrouping=self.GetGroupingSlice()
+        startSel = self.LineFromPosition(self.GetSelectionStart())
+        endSel = self.LineFromPosition(self.GetSelectionEnd())
+        
+        #ADD UNDO
+        cpos=self.GetSelectionStart()
+        s=self.GetSelectedText()
+        if s!='':
+            self.UpdateUndoHistoryBefore('delete',s,cpos,cpos+len(s),
+                                         forceNewAction=True)
+        editwindow.EditWindow.ReplaceSelection(self,'',*args,**kwds)
+        if s!='' and not sliceDeletion:
+            self.UpdateUndoHistoryAfter()
+        
+        if endSel-startSel>0 and not sliceDeletion:
+            if endSel==endIO and startIO!=self.GetCurrentLine():
+                self.clearIOMarkers()
+                self.MarkerAdd(self.GetCurrentLine(),INPUT_END)
+            
+            if endSel==endGrouping and startGrouping!=self.GetCurrentLine():
+                self.clearGroupingMarkers()
+                self.MarkerAdd(self.GetCurrentLine(),GROUPING_END)
+        
+        cpos=self.GetSelectionStart()
+        s=text
+        if s!='':
+            self.UpdateUndoHistoryBefore('insert',s,cpos,cpos+len(s),
+                                         forceNewAction=True)
+            self.write(text)
+            self.UpdateUndoHistoryAfter()
+        
+        self.ensureSingleGroupingMarker()
+        self.ensureSingleIOMarker()
+        
+    
+    def clearCommand(self):
+        """Delete the current, unexecuted command."""
+        if not self.CanEdit():
+            return
+        start,end=self.GetIOSlice()
+        startpos = self.PositionFromLine(start)
+        endpos = self.GetLineEndPosition(end)
+        self.SetSelection(startpos, endpos)
+        self.ReplaceSelection('')
+        self.more = False
+
+    def OnHistoryReplace(self, step):
+        """Replace with the previous/next command from the history buffer."""
+        if not self.CanEdit():
+            return    
+        self.clearCommand()
+        self.replaceFromHistory(step)
+
+    def replaceFromHistory(self, step):
+        """Replace selection with command from the history buffer."""
+        if not self.CanEdit():
+            return
+        self.ReplaceSelection('')
+        newindex = self.historyIndex + step
+        if -1 <= newindex <= len(self.history):
+            self.historyIndex = newindex
+        if 0 <= newindex <= len(self.history)-1:
+            command = self.history[self.historyIndex]
+            command = command.replace('\n', os.linesep)# + ps2)
+            self.ReplaceSelection(command)
+
+    def OnHistoryInsert(self, step):
+        """Insert the previous/next command from the history buffer."""
+        if not self.CanEdit():
+            return
+        startpos = self.GetCurrentPos()
+        self.replaceFromHistory(step)
+        endpos = self.GetCurrentPos()
+        self.SetSelection(endpos, startpos)
+    
+    # TODO: Fix Me!
+    def OnHistorySearch(self):
+        """Search up the history buffer for the text in front of the cursor."""
+        if not self.CanEdit():
+            return
+        startpos = self.GetCurrentPos()
+        # The text up to the cursor is what we search for.
+        numCharsAfterCursor = self.GetTextLength() - startpos
+        searchText = self.getCommand(rstrip=False)
+        #print 'history search', startpos,numCharsAfterCursor,searchText
+        if numCharsAfterCursor > 0:
+            searchText = searchText[:-numCharsAfterCursor]
+        if not searchText:
+            return
+        # Search upwards from the current history position and loop
+        # back to the beginning if we don't find anything.
+        if (self.historyIndex <= -1) \
+        or (self.historyIndex >= len(self.history)-2):
+            searchOrder = range(len(self.history))
+        else:
+            searchOrder = range(self.historyIndex+1, len(self.history)) + \
+                          range(self.historyIndex)
+        for i in searchOrder:
+            command = self.history[i]
+            if command[:len(searchText)] == searchText:
+                # Replace the current selection with the one we found.
+                self.ReplaceSelection(command[len(searchText):])
+                endpos = self.GetCurrentPos()
+                self.SetSelection(endpos, startpos)
+                # We've now warped into middle of the history.
+                self.historyIndex = i
+                break
+
+    def setStatusText(self, text):
+        """Display status information."""
+
+        # This method will likely be replaced by the enclosing app to
+        # do something more interesting, like write to a status bar.
+        print text
+
+    def insertLineBreak(self):
+        """Insert a new line break."""
+        if not self.CanEdit():
+            return
+        elif self.reader.isreading:
+            self.processLine()
+            return
+        
+        
+        # write with undo wrapper...
+        cpos=self.GetCurrentPos()
+        s=os.linesep
+        self.UpdateUndoHistoryBefore('insert',s,cpos,cpos+1)
+        self.write(s,type='Input')
+        self.UpdateUndoHistoryAfter()
+        
+        self.more = True
+        self.prompt()
+
+    def processLine(self):
+        """Process the line of text at which the user hit Enter or Shift+RETURN."""
+        # The user hit ENTER (Shift+RETURN) (Shift+ENTER) and we need to
+        # decide what to do. They could be sitting on any line in the slices shell.
+        thepos = self.GetCurrentPos()
+        cur_line = self.GetCurrentLine()
+        marker=self.MarkerGet(cur_line)
+        if marker & INPUT_MASK:
+            pass
+        elif marker & OUTPUT_MASK:
+            return
+        else:
+            pass #print 'BLANK LINE!!'
+        
+        startline,endline=self.GetIOSlice(cur_line)
+        
+        if startline==0:
+            startpos=0
+        else:
+            startpos=self.PositionFromLine(startline)
+        
+        endpos=self.GetLineEndPosition(endline)
+        
+        # If they hit ENTER inside the current command, execute the command.
+        if self.CanEdit():
+            self.SetCurrentPos(endpos)
+            self.interp.more = False
+            command = self.GetTextRange(startpos, endpos)
+            lines = command.split(os.linesep)
+            lines = [line.rstrip() for line in lines]
+            command = '\n'.join(lines)
+            if self.reader.isreading:
+                if not command:
+                    # Match the behavior of the standard Python shell
+                    # when the user hits return without entering a value.
+                    command = '\n'
+                self.reader.input = command
+                self.write(os.linesep,'Input')
+                self.MarkerSet(self.GetCurrentLine(),READLINE_BG)
+                self.MarkerSet(self.GetCurrentLine(),INPUT_READLINE)
+            else:
+                self.runningSlice = (startline,endline)
+                self.push(command,useMultiCommand=True)
+                #print 'command: ',command
+                wx.FutureCall(1, self.EnsureCaretVisible)
+                self.runningSlice=None
+        
+        skip=self.BackspaceWMarkers(force=True)
+        if skip:
+            self.DeleteBack()
+        
+        if self.GetCurrentLine()==self.GetLineCount()-1:
+            self.write(os.linesep,type='Input')
+            cpos=self.GetCurrentLine()
+            if self.MarkerGet(cpos-1) & OUTPUT_MASK:
+                self.MarkerAdd(cpos-1,OUTPUT_BG)
+            self.SplitSlice()
+        else:
+            cur_line=self.GetCurrentLine()
+            new_pos=self.GetLineEndPosition(cur_line+1)
+            self.SetSelection(new_pos,new_pos)
+            self.SetCurrentPos(new_pos)
+        
+        self.EmptyUndoBuffer()
+        self.NeedsCheckForSave=True
+        if self.hasSyntaxError:
+            pos=self.GetLineEndPosition(self.syntaxErrorRealLine)
+            self.SetCurrentPos(pos)
+            self.SetSelection(pos,pos)
+    
+    # Not Used!!
+    def getMultilineCommand(self, rstrip=True):
+        """Extract a multi-line command from the editor.
+
+        The command may not necessarily be valid Python syntax."""
+        # DNM
+        # XXX Need to extract real prompts here. Need to keep track of
+        # the prompt every time a command is issued.
+        text = self.GetCurLine()[0]
+        line = self.GetCurrentLine()
+        # Add Marker testing here...
+        while text == '' and line > 0: # Need to add markers handling...
+            line -= 1
+            self.GotoLine(line)
+            text = self.GetCurLine()[0]
+        if text=='':
+            line = self.GetCurrentLine()
+            self.GotoLine(line)
+            startpos = self.GetCurrentPos()
+            line += 1
+            self.GotoLine(line)
+            while self.GetCurLine()[0]=='':
+                line += 1
+                self.GotoLine(line)
+            stoppos = self.GetCurrentPos()
+            command = self.GetTextRange(startpos, stoppos)
+            command = command.replace(os.linesep, '\n')
+            command = command.rstrip()
+            command = command.replace('\n', os.linesep)
+        else:
+            command = ''
+        if rstrip:
+            command = command.rstrip()
+        return command
+
+    def getCommand(self, text=None, rstrip=True):
+        """Extract a command from text which may include a shell prompt.
+
+        The command may not necessarily be valid Python syntax."""
+        if not text:
+            text = self.GetCurLine()[0]
+        # Strip the prompt off the front leaving just the command.
+        command = self.lstripPrompt(text)
+        # Change this -- Nothing has prompts!
+        #if command == text:
+        #    command = ''  # Real commands have prompts.
+        if rstrip:
+            command = command.rstrip()
+        return command
+
+    def lstripPrompt(self, text):
+        """Return text without a leading prompt."""
+        ps1 = str(sys.ps1)
+        ps1size = len(ps1)
+        ps2 = str(sys.ps2)
+        ps2size = len(ps2)
+        # Strip the prompt off the front of text.
+        if text[:ps1size] == ps1:
+            text = text[ps1size:]
+        elif text[:ps2size] == ps2:
+            text = text[ps2size:]
+        return text
+
+    def push(self, command, silent = False,useMultiCommand=False):
+        """Send command to the interpreter for execution."""
+        if not silent:
+            self.write(os.linesep,type='Output')
+        # TODO : What other magic might we insert here?
+        # TODO : Is there a good reason not to include magic?
+        if USE_MAGIC:
+            command=magic(command)
+        
+        # Allows multi-component commands...
+        self.hasSyntaxError=False
+        if useMultiCommand:
+            result = self.BreakTextIntoCommands(command)
+            if result[0] == None:
+                commands=[command]
+                self.hasSyntaxError=True
+                syntaxErrorLine=result[1]+1
+                self.syntaxErrorRealLine = self.GetCurrentLine()+result[1]-len(command.split('\n'))
+            else:
+                commands=result
+        else:
+            commands=[command]
+        
+        busy = wx.BusyCursor()
+        self.waiting = True
+        self.lastUpdate=None
+        
+        for i in commands:
+            if self.hasSyntaxError:
+                lineno=syntaxErrorLine
+                offset=0 # not sure how to easily recover this information...
+                self.write('  File "<input>", line '+str(lineno)+'\n    '+i.split('\n')[lineno-1]+'\n'+' '*offset+'    ^\nSyntaxError: invalid syntax\n','Error')
+            else:
+                self.more = self.interp.push(i+'\n')
+            # (the \n stops many things from bouncing at the interpreter)
+            # I could do the following, but I don't really like it!
+            #if useMultiCommand:
+            #    self.SplitSlice()
+        self.lastUpdate=None
+        
+        if not silent:
+            self.MarkerAdd(self.GetIOSlice()[0],OUTPUT_BG)
+        
+        self.waiting = False
+        del busy
+        if not self.more: # could loop-add to history, too, but I don't like it!
+            self.addHistory(command.rstrip())
+        
+        if not silent:
+            self.prompt()
+
+    def addHistory(self, command):
+        """Add command to the command history."""
+        # Reset the history position.
+        self.historyIndex = -1
+        # Insert this command into the history, unless it's a blank
+        # line or the same as the last command.
+        if command!='' and ( len(self.history)==0 or command!=self.history[0] ):
+            self.history.insert(0, command)
+            dispatcher.send(signal="SlicesShell.addHistory", command=command)
+    
+    def clearGroupingMarkers(self,line_num=None):
+        if line_num==None:
+            line_num=self.GetCurrentLine()
+        self.MarkerDelete(line_num,GROUPING_START)
+        self.MarkerDelete(line_num,GROUPING_START_FOLDED)
+        self.MarkerDelete(line_num,GROUPING_MIDDLE)
+        self.MarkerDelete(line_num,GROUPING_END)
+    def clearIOMarkers(self,line_num=None):
+        if line_num==None:
+            line_num=self.GetCurrentLine()
+        self.MarkerDelete(line_num,INPUT_START)
+        self.MarkerDelete(line_num,INPUT_START_FOLDED)
+        self.MarkerDelete(line_num,INPUT_MIDDLE)
+        self.MarkerDelete(line_num,INPUT_END)
+        self.MarkerDelete(line_num,OUTPUT_START)
+        self.MarkerDelete(line_num,OUTPUT_START_FOLDED)
+        self.MarkerDelete(line_num,OUTPUT_MIDDLE)
+        self.MarkerDelete(line_num,OUTPUT_END)
+        self.MarkerDelete(line_num,OUTPUT_BG)
+        self.MarkerDelete(line_num,READLINE_BG)
+        self.MarkerDelete(line_num,INPUT_READLINE)
+    def ensureSingleGroupingMarker(self,line_num=None):
+        if line_num==None:
+            line_num=self.GetCurrentLine()
+        marker=self.MarkerGet(line_num)
+        if marker & 1<<GROUPING_START:
+            self.MarkerDelete(line_num,GROUPING_START_FOLDED)
+            self.MarkerDelete(line_num,GROUPING_MIDDLE)
+            self.MarkerDelete(line_num,GROUPING_END)
+        elif marker & 1<<GROUPING_START_FOLDED:
+            self.MarkerDelete(line_num,GROUPING_MIDDLE)
+            self.MarkerDelete(line_num,GROUPING_END)
+        elif marker & 1<<GROUPING_MIDDLE:
+            self.MarkerDelete(line_num,GROUPING_END)
+        elif marker & 1<<GROUPING_END:
+            pass
+        else:
+            #print 'ERROR! NO GROUPING MARKERS!'
+            return 1 # Blank marker
+        
+        return 0
+    
+    def ensureSingleIOMarker(self,line_num=None):
+        if line_num==None:
+            line_num=self.GetCurrentLine()
+        marker=self.MarkerGet(line_num)
+        if marker & INPUT_MASK:
+            self.MarkerDelete(line_num,OUTPUT_START)
+            self.MarkerDelete(line_num,OUTPUT_START_FOLDED)
+            self.MarkerDelete(line_num,OUTPUT_MIDDLE)
+            self.MarkerDelete(line_num,OUTPUT_END)
+            self.MarkerDelete(line_num,OUTPUT_BG)
+            [start,start_folded] = [INPUT_START,INPUT_START_FOLDED]
+            [middle,end] = [INPUT_MIDDLE,INPUT_END]
+        elif marker & OUTPUT_MASK:
+            self.MarkerDelete(line_num,INPUT_START)
+            self.MarkerDelete(line_num,INPUT_START_FOLDED)
+            self.MarkerDelete(line_num,INPUT_MIDDLE)
+            self.MarkerDelete(line_num,INPUT_END)
+            [start,start_folded] = [OUTPUT_START,OUTPUT_START_FOLDED]
+            [middle,end] = [OUTPUT_MIDDLE,OUTPUT_END]
+        else:
+            #print 'ERROR! NO IO MARKERS!'
+            return 1 # Blank marker
+        
+        if marker & 1<<start:
+            self.MarkerDelete(line_num,start_folded)
+            self.MarkerDelete(line_num,middle)
+            self.MarkerDelete(line_num,end)
+        elif marker & 1<<start_folded:
+            self.MarkerDelete(line_num,middle)
+            self.MarkerDelete(line_num,end)
+        elif marker & 1<<middle:
+            self.MarkerDelete(line_num,end)
+        elif marker & 1<<end:
+            pass
+        
+        return 0
+        
+    def RestoreFirstMarker(self):
+        first_marker=self.MarkerGet(0)
+        self.clearGroupingMarkers(0)
+        self.clearIOMarkers(0)
+        
+        if first_marker & 1<<GROUPING_START :
+            self.MarkerAdd(0,GROUPING_START)
+        elif first_marker & 1<<GROUPING_START_FOLDED :
+            self.MarkerAdd(0,GROUPING_START_FOLDED)
+        else:
+            self.MarkerAdd(0,GROUPING_START)
+        
+        if first_marker & 1<<INPUT_START :
+            self.MarkerAdd(0,INPUT_START)
+        elif first_marker & 1<<INPUT_START_FOLDED :
+            self.MarkerAdd(0,INPUT_START_FOLDED)
+        elif first_marker & 1<<OUTPUT_START :
+            self.MarkerAdd(0,OUTPUT_START)
+            #self.MarkerAdd(0,OUTPUT_BG) # More harm than good??
+        elif first_marker & 1<<OUTPUT_START_FOLDED :
+            self.MarkerAdd(0,OUTPUT_START_FOLDED)
+            #self.MarkerAdd(0,OUTPUT_BG) # More harm than good??
+        else:
+            self.MarkerAdd(0,INPUT_START)
+        
+        if self.doHistUpdate:
+            self.UpdateUndoHistoryAfter()
+    
+    def IsAllowedPair(self,m1,m2):
+        """This testing function ensures that two adjacent markers are valid"""
+        i_s = 1<<INPUT_START | 1<<INPUT_START_FOLDED
+        o_s = 1<<OUTPUT_START | 1<<OUTPUT_START_FOLDED
+        g_s = 1<<GROUPING_START | 1<<GROUPING_START_FOLDED
+        i_m,o_m,g_m = 1<<INPUT_MIDDLE, 1<<OUTPUT_MIDDLE, 1<<GROUPING_MIDDLE
+        i_e,o_e,g_e = 1<<INPUT_END, 1<<OUTPUT_END, 1<<GROUPING_END
+        
+        if (m1 & i_s) and (m1 & g_s):     #1
+            if   (m2 & i_s) and (m2 & g_s): return True  #1
+            elif (m2 & i_m) and (m2 & g_m): return True  #2
+            elif (m2 & i_e) and (m2 & g_m): return True  #3
+            elif (m2 & i_e) and (m2 & g_e): return True  #4
+            elif (m2 & o_s) and (m2 & g_s): return False #5
+            elif (m2 & o_s) and (m2 & g_m): return True  #6
+            elif (m2 & o_s) and (m2 & g_e): return True  #7
+            elif (m2 & o_m) and (m2 & g_m): return False #8
+            elif (m2 & o_e) and (m2 & g_e): return False #9
+            else: return False
+        elif (m1 & i_m) and (m1 & g_m):   #2
+            if   (m2 & i_m) and (m2 & g_m): return True  #2
+            elif (m2 & i_e) and (m2 & g_m): return True  #3
+            elif (m2 & i_e) and (m2 & g_e): return True  #4
+            else: return False
+        elif (m1 & i_e) and (m1 & g_m):   #3
+            if   (m2 & o_s) and (m2 & g_m): return True  #6
+            elif (m2 & o_s) and (m2 & g_e): return True  #7
+            else: return False
+        elif (m1 & i_e) and (m1 & g_e):   #4
+            if   (m2 & i_s) and (m2 & g_s): return True  #1
+            elif (m2 & o_s) and (m2 & g_s): return True  #5
+            else: return False
+        elif (m1 & o_s) and (m1 & g_s):   #5
+            if   (m2 & i_s) and (m2 & g_s): return True  #1
+            elif (m2 & i_m) and (m2 & g_m): return False #2
+            elif (m2 & i_e) and (m2 & g_m): return False #3
+            elif (m2 & i_e) and (m2 & g_e): return False #4
+            elif (m2 & o_s) and (m2 & g_s): return True  #5
+            elif (m2 & o_s) and (m2 & g_m): return False #6
+            elif (m2 & o_s) and (m2 & g_e): return False #7
+            elif (m2 & o_m) and (m2 & g_m): return True  #8
+            elif (m2 & o_e) and (m2 & g_e): return True  #9
+            else: return False
+        elif (m1 & o_s) and (m1 & g_m):   #6
+            if   (m2 & o_m) and (m2 & g_m): return True  #8
+            elif (m2 & o_e) and (m2 & g_e): return True  #9
+            else: return False
+        elif (m1 & o_s) and (m1 & g_e):   #7
+            if   (m2 & i_s) and (m2 & g_s): return True  #1
+            elif (m2 & o_s) and (m2 & g_s): return True  #5
+            else: return False
+        elif (m1 & o_m) and (m1 & g_m):   #8
+            if   (m2 & o_m) and (m2 & g_m): return True  #8
+            elif (m2 & o_e) and (m2 & g_e): return True  #9
+            else: return False
+        elif (m1 & o_e) and (m1 & g_e):   #9
+            if   (m2 & i_s) and (m2 & g_s): return True  #1
+            elif (m2 & o_s) and (m2 & g_s): return True  #5
+            else: return False
+        else:
+            return False
+            
+        
+    def CleanAllMarkers(self):
+        self.RestoreFirstMarker()
+        first_marker=self.MarkerGet(0)
+        last_line_num=self.GetLineCount()-1
+        
+        for i in range(1,last_line_num):
+            self.ensureSingleGroupingMarker(i)
+            self.ensureSingleIOMarker(i)
+            
+            previous_marker=self.MarkerGet(i-1)
+            marker=self.MarkerGet(i)
+            
+            if not self.IsAllowedPair(previous_marker,marker):
+                pass # FIX MARKER!!
+            # FIX ME
+    
+    def write(self, text,type='Input',silent=False):
+        """Display text in the slices shell.
+
+        Replace line endings with OS-specific endings."""
+        text = self.fixLineEndings(text)
+        split=text.split(os.linesep)
+        self.AddText(text)
+        
+        # This part handles all the marker stuff that accompanies
+        # adding or removing new lines of text...
+        # Get the total number of lines in the Document == last line number
+        last_line_num=self.GetLineCount()-1
+        # Get the line number we ended on in the write
+        end_line_num=self.GetCurrentLine()
+        # Get the number of returns we are using == number of lines we pasted -1
+        num_new_lines=text.count(os.linesep)
+        # So if num_new_lines==0, start_line_num and end_line_num are the same
+        start_line_num=end_line_num-num_new_lines+1
+        
+        # This is a little unnecessary because there will always
+        # be a line before if we just inserted a newline!
+        if start_line_num == 0:
+            previous_line_num=None
+        else:
+            previous_line_num=start_line_num-1
+        
+        #However, this is very important...
+        if end_line_num == last_line_num:
+            next_line_num=None
+        else:
+            next_line_num=end_line_num+1
+        
+        if type=='Input':
+            start = INPUT_START
+            start_folded = INPUT_START_FOLDED
+            middle = INPUT_MIDDLE
+            end = INPUT_END
+            # preparation for more io types...
+            opposite_start_mask = 1<<OUTPUT_START
+            opposite_start_folded_mask = 1<<OUTPUT_START_FOLDED
+            opposite_middle_mask = 1<<OUTPUT_MIDDLE # To test for bad writes...
+            opposite_end_mask = 1<<OUTPUT_END # To test for bad writes...
+        elif type in ['Output','Error']:
+            #self.MarkerAdd(start_line_num,GROUPING_START_FOLDED)
+            start=OUTPUT_START
+            start_folded=OUTPUT_START_FOLDED
+            middle=OUTPUT_MIDDLE
+            end=OUTPUT_END
+            # preparation for more io types...
+            opposite_start_mask = 1<<INPUT_START
+            opposite_start_folded_mask = 1<<INPUT_START_FOLDED
+            opposite_middle_mask = 1<<INPUT_MIDDLE # To test for bad writes...
+            opposite_end_mask = 1<<INPUT_END # To test for bad writes...
+        
+        if num_new_lines>0: #Do nothing if typing within a line...
+            # Update the Grouping Markers
+            # For the previous line and the start_line
+            # Test to make sure we can write ... but not here ...
+            #    test this before we call write or before we add text...
+            # So we assume it already obeys the rules 
+            
+            badMarkers=False
+            fixIOEnd=True
+            
+            if previous_line_num==None:
+                # This is an impossible case, here just for completeness...
+                self.clearGroupingMarkers(start_line_num)
+                self.MarkerAdd(start_line_num,GROUPING_START)
+                
+                self.clearIOMarkers(start_line_num)
+                self.MarkerAdd(start_line_num,start)
+                if type in ['Output','Error']: self.MarkerAdd(start_line_num,OUTPUT_BG)
+            else:
+                previous_marker=self.MarkerGet(previous_line_num)
+                if previous_marker & opposite_middle_mask:
+                    badMarkers=True
+            
+            if next_line_num==None:
+                self.MarkerAdd(end_line_num,GROUPING_END)
+                self.MarkerAdd(end_line_num,end)
+                if type in ['Output','Error']: self.MarkerAdd(end_line_num,OUTPUT_BG)
+                fixEndMarkers=False
+                # May be overwritten below if start_line_num==end_line_num...
+            else:
+                next_marker=self.MarkerGet(next_line_num)
+                fixEndMarkers=True
+                if next_marker & ( opposite_middle_mask | opposite_end_mask ):
+                    badMarkers=True
+            
+            if not badMarkers:
+                # ensure previous_line only has one marker & turn end into middle
+                if previous_line_num!=None:
+                    # Adjust previous line appropriately, ensure only one marker
+                    # Only print errors if we are on input!
+                    blank=False
+                    blank=blank or self.ensureSingleGroupingMarker(previous_line_num)
+                    blank=blank or self.ensureSingleIOMarker(previous_line_num)
+                    
+                    if blank:
+                        #if type=='Input' and not silent: print 'BLANK LINE!' # BAD CASE
+                        pass
+                    
+                    if previous_marker & 1<<GROUPING_END :
+                        # Make GROUPING slice continue unless we hit
+                        #  an output end and are starting a new input...
+                        if (previous_marker & OUTPUT_MASK) and type=='Input':
+                            pass
+                        else:
+                            self.MarkerDelete(previous_line_num,GROUPING_END)
+                            # ONLY CHANGING CASE
+                            self.MarkerAdd(previous_line_num,GROUPING_MIDDLE)
+                    
+                    if previous_marker & 1<<end :
+                        self.MarkerDelete(previous_line_num,end)
+                        self.MarkerAdd(previous_line_num,middle) # ONLY CHANGING CASE
+                        if type in ['Output','Error']: self.MarkerAdd(previous_line_num,OUTPUT_BG)
+                    elif previous_marker & opposite_middle_mask :
+                         # BAD CASE
+                        if type=='Input' and not silent:
+                            #print 'Should have been a bad marker!'
+                            pass
+                    
+                    # We can only add input to an input slice
+                    # And can only add output to an output slice
+                    
+                    if previous_marker & ( opposite_start_mask |
+                                           opposite_start_folded_mask |
+                                           opposite_end_mask ):
+                        if type=='Input':
+                            self.clearGroupingMarkers(start_line_num)
+                            self.MarkerAdd(start_line_num,GROUPING_START)
+                            if start_line_num==end_line_num:
+                                fixEndMarkers=False
+                        else:
+                            if start_line_num==end_line_num:
+                                fixIOEnd=False
+                        self.clearIOMarkers(start_line_num)
+                        self.MarkerAdd(start_line_num,start)
+                        if type in ['Output','Error']: self.MarkerAdd(start_line_num,OUTPUT_BG)
+                    else:
+                        if next_line_num!=None:
+                            self.clearGroupingMarkers(start_line_num)
+                            self.clearIOMarkers(start_line_num)
+                            self.MarkerAdd(start_line_num,GROUPING_MIDDLE)
+                            self.MarkerAdd(start_line_num,middle)
+                            if type in ['Output','Error']: self.MarkerAdd(start_line_num,OUTPUT_BG)
+                            # This may be overwritten if start_line_num==end_line_num
+                
+                # Take care of all the middle lines...
+                # Does nothing for only one line...
+                for i in range(start_line_num,end_line_num):
+                    self.clearGroupingMarkers(i)
+                    self.MarkerAdd(i,GROUPING_MIDDLE)
+                    
+                    self.clearIOMarkers(i)
+                    self.MarkerAdd(i,middle)
+                    if type in ['Output','Error']: self.MarkerAdd(i,OUTPUT_BG)
+                
+                if fixEndMarkers:
+                    # Take care of the end_line if we haven't already done so...
+                    blank=False
+                    blank=blank or self.ensureSingleGroupingMarker(next_line_num)
+                    blank=blank or self.ensureSingleIOMarker(next_line_num)
+                    
+                    if blank:
+                        if type=='Input' and not silent:
+                            #print 'BLANK LINE!' # BAD CASE
+                            pass
+                    
+                    self.clearGroupingMarkers(end_line_num)
+                    if fixIOEnd:
+                        self.clearIOMarkers(end_line_num)
+                    
+                    if next_marker & ( 1<<GROUPING_START | 1<<GROUPING_START_FOLDED ) :
+                        self.MarkerAdd(end_line_num,GROUPING_END)
+                    elif next_marker & ( 1<<GROUPING_MIDDLE | 1<<GROUPING_END ) :
+                        self.MarkerAdd(end_line_num,GROUPING_MIDDLE)
+                    
+                    if fixIOEnd: 
+                        if next_marker & ( 1<<start | 1<<start_folded ) :
+                            self.MarkerAdd(end_line_num,end)
+                            if type in ['Output','Error']: self.MarkerAdd(end_line_num,OUTPUT_BG)
+                        elif next_marker & ( 1<<middle | 1<<end ) :
+                            self.MarkerAdd(end_line_num,middle)
+                            if type in ['Output','Error']: self.MarkerAdd(end_line_num,OUTPUT_BG)
+                        elif next_marker & ( opposite_start_mask |
+                                             opposite_start_folded_mask ):
+                            self.MarkerAdd(end_line_num,end)
+                            if type in ['Output','Error']: self.MarkerAdd(end_line_num,OUTPUT_BG)
+                        else:
+                            self.MarkerAdd(end_line_num,start_folded)
+                            if type in ['Output','Error']: self.MarkerAdd(end_line_num,OUTPUT_BG)
+                            if type=='Input' and not silent:
+                                #print 'BAD MARKERS!'
+                                pass
+            else:
+                if type=='Input' and not silent:
+                    #print 'BAD MARKERS!!!'
+                    pass
+        
+        self.EnsureCaretVisible()
+        
+        if self.waiting:
+            if self.lastUpdate==None:
+                self.lastUpdate=time.time()
+            if time.time()-self.lastUpdate > PRINT_UPDATE_MAX_TIME:
+                self.Update()
+                self.lastUpdate=time.time()
+    
+    def fixLineEndings(self, text):
+        """Return text with line endings replaced by OS-specific endings."""
+        lines = text.split('\r\n')
+        for l in range(len(lines)):
+            chunks = lines[l].split('\r')
+            for c in range(len(chunks)):
+                chunks[c] = os.linesep.join(chunks[c].split('\n'))
+            lines[l] = os.linesep.join(chunks)
+        text = os.linesep.join(lines)
+        return text
+
+    def prompt(self): # Autoindent added!!!
+        """Display proper prompt for the context: ps1, ps2 or ps3.
+        
+        If this is a continuation line, autoindent as necessary."""
+        # TODO : How much of this can I do away with now without prompts??
+        
+        isreading = self.reader.isreading
+        
+        skip = True
+        if isreading:
+            prompt = str(sys.ps3)
+        elif self.more:
+            prompt = str(sys.ps2)
+        else:
+            prompt = str(sys.ps1)
+        pos = self.GetCurLine()[1]
+        if pos > 0:
+            if isreading:
+                skip = True
+            else:
+                self.write(os.linesep,type='Input')
+        if not self.more:
+            # Not needed anymore! # self.promptPosStart = self.GetCurrentPos()
+            pass
+        if not skip:
+            self.write(prompt,type='Input')
+        if not self.more:
+            # Not needed anymore! # self.promptPosEnd = self.GetCurrentPos()
+            # Clear the undo history after running a command.
+            self.EmptyUndoBuffer()
+        
+        #DNM/CP
+        # Autoindent magic
+        # Match the indent of the line above
+        # UNLESS the line above ends in a colon...then add four spaces
+        # (after valid keywords (if, else, etc...) only)
+        if self.more:
+            line_num=self.GetCurrentLine()
+            currentLine=self.GetLine(line_num)
+            previousLine=self.GetLine(line_num-1)
+            pstrip=previousLine.strip()
+            lstrip=previousLine.lstrip()
+            
+            if pstrip == '':
+                # because it is all whitespace!
+                indent=previousLine.strip('\n').strip('\r')
+            else:
+                indent=previousLine[:(len(previousLine)-len(lstrip))]
+                if testForContinuations(previousLine,ignoreErrors=True)[1][0]:
+                    indent+=' '*4
+            
+            #ADD UNDO
+            cpos=self.GetCurrentPos()
+            s=indent
+            self.UpdateUndoHistoryBefore('insert',s,cpos,cpos+len(s))
+            self.write(s,type='Input')
+            self.UpdateUndoHistoryAfter()
+            
+            
+        self.EnsureCaretVisible()
+        self.ScrollToColumn(0)
+
+    def readline(self):
+        """Replacement for stdin.readline()."""
+        input = ''
+        reader = self.reader
+        reader.isreading = True
+        self.prompt()
+        
+        # Ensure that we get a new line and that it's got an input marker...
+        # Also need to temporarily block any other action...
+        cLine = self.GetCurrentLine()
+        self.clearIOMarkers(cLine)
+        self.MarkerAdd(cLine,INPUT_START)
+        self.MarkerAdd(cLine,READLINE_BG)
+        self.MarkerAdd(cLine,INPUT_READLINE)
+        
+        try:
+            while not reader.input:
+                wx.YieldIfNeeded()
+            input = reader.input
+        finally:
+            start,end = self.GetIOSlice()
+            start = self.runningSlice[1] + 1
+            for i in range(start,end+1):
+                self.clearIOMarkers(i)
+                self.clearGroupingMarkers(i)
+                self.MarkerAdd(i,OUTPUT_BG)
+                if i == start:    self.MarkerAdd(i,OUTPUT_START)
+                elif i==end:      self.MarkerAdd(i,OUTPUT_END)
+                else:             self.MarkerAdd(i,OUTPUT_MIDDLE)
+                
+                if i==end:        self.MarkerAdd(i,GROUPING_END)
+                else:             self.MarkerAdd(i,GROUPING_MIDDLE)
+            reader.input = ''
+            reader.isreading = False
+        input = str(input)  # In case of Unicode.
+        return input
+
+    def readlines(self):
+        """Replacement for stdin.readlines()."""
+        lines = []
+        while lines[-1:] != ['\n']:
+            lines.append(self.readline())
+        return lines
+
+    def raw_input(self, prompt=''):
+        """Return string based on user input."""
+        if prompt:
+            self.write(prompt,type='Output')
+        return self.readline()
+
+    def ask(self, prompt='Please enter your response:'):
+        """Get response from the user using a dialog box."""
+        dialog = wx.TextEntryDialog(None, prompt,
+                                    'Input Dialog (Raw)', '')
+        try:
+            if dialog.ShowModal() == wx.ID_OK:
+                text = dialog.GetValue()
+                return text
+        finally:
+            dialog.Destroy()
+        return ''
+
+    def pause(self):
+        """Halt execution pending a response from the user."""
+        self.ask('Press enter to continue:')
+
+    def clear(self):
+        """Delete all text from the slices shell."""
+        self.ClearAll()
+        self.MarkerAdd(0,GROUPING_START)
+        self.MarkerAdd(0,INPUT_START)
+
+    def run(self, command, prompt=True, verbose=True):
+        """Execute command as if it was typed in directly.
+        >>> shell.run('print "this"')
+        >>> print "this"
+        this
+        >>>
+        """
+        # Go to the very bottom of the text.
+        endpos = self.GetTextLength()
+        self.SetCurrentPos(endpos)
+        command = command.rstrip()
+        if prompt: self.prompt()
+        if verbose: self.write(command,type='Input')
+        self.push(command)
+
+    # TODO : Will have to fix this to handle other kinds of errors mentioned before...
+    def runfile(self, filename):
+        """Execute all commands in file as if they were typed into the shell."""
+        file = open(filename)
+        try:
+            self.prompt()
+            for command in file.readlines():
+                if command[:6] == 'shell.':
+                    # Run shell methods silently.
+                    self.run(command, prompt=False, verbose=False)
+                else:
+                    self.run(command, prompt=False, verbose=True)
+        finally:
+            file.close()
+
+    def autoCompleteShow(self, command, offset = 0):
+        """Display auto-completion popup list."""
+        self.AutoCompSetAutoHide(self.autoCompleteAutoHide)
+        self.AutoCompSetIgnoreCase(self.autoCompleteCaseInsensitive)
+        list = self.interp.getAutoCompleteList(command,
+                    includeMagic=self.autoCompleteIncludeMagic,
+                    includeSingle=self.autoCompleteIncludeSingle,
+                    includeDouble=self.autoCompleteIncludeDouble)
+        if list:
+            options = ' '.join(list)
+            #offset = 0
+            self.AutoCompShow(offset, options)
+
+    def autoCallTipShow(self, command, insertcalltip = True, forceCallTip = False):
+        """Display argument spec and docstring in a popup window."""
+        if self.CallTipActive():
+            self.CallTipCancel()
+        (name, argspec, tip) = self.interp.getCallTip(command)
+        if tip:
+            dispatcher.send(signal='SlicesShell.calltip', sender=self, calltip=tip)
+        if not self.autoCallTip and not forceCallTip:
+            return
+        startpos = self.GetCurrentPos()
+        if argspec and insertcalltip and self.callTipInsert:
+            # write with undo history...
+            cpos=self.GetCurrentPos()
+            s=argspec + ')'
+            self.UpdateUndoHistoryBefore('insert',s,cpos,cpos+len(s))
+            self.write(s,type='Input')
+            self.UpdateUndoHistoryAfter()
+            
+            endpos = self.GetCurrentPos()
+            self.SetSelection(startpos, endpos)
+        if tip:
+            tippos = startpos - (len(name) + 1)
+            fallback = startpos - self.GetColumn(startpos)
+            # In case there isn't enough room, only go back to the fallback.
+            tippos = max(tippos, fallback)
+            self.CallTipShow(tippos, tip)
+    
+    def OnCallTipAutoCompleteManually (self, shiftDown):
+        """AutoComplete and Calltips manually."""
+        if self.AutoCompActive():
+            self.AutoCompCancel()
+        currpos = self.GetCurrentPos()
+        stoppos = self.PositionFromLine(self.GetIOSlice()[0])
+
+        cpos = currpos
+        #go back until '.' is found
+        pointavailpos = -1
+        while cpos >= stoppos:
+            if self.GetCharAt(cpos) == ord ('.'):
+                pointavailpos = cpos
+                break
+            cpos -= 1
+
+        #word from non whitespace until '.'
+        if pointavailpos != -1:
+            #look backward for first whitespace char
+            textbehind = self.GetTextRange (pointavailpos + 1, currpos)
+            pointavailpos += 1
+
+            if not shiftDown:
+                #call AutoComplete
+                stoppos = self.PositionFromLine(self.GetIOSlice()[0])
+                textbefore = self.GetTextRange(stoppos, pointavailpos)
+                self.autoCompleteShow(textbefore, len (textbehind))
+            else:
+                #call CallTips
+                cpos = pointavailpos
+                begpos = -1
+                while cpos > stoppos:
+                    if chr(self.GetCharAt(cpos)).isspace():
+                        begpos = cpos
+                        break
+                    cpos -= 1
+                if begpos == -1:
+                    begpos = cpos
+                ctips = self.GetTextRange (begpos, currpos)
+                ctindex = ctips.find ('(')
+                if ctindex != -1 and not self.CallTipActive():
+                    #insert calltip, if current pos is '(', otherwise show it only
+                    self.autoCallTipShow( ctips[:ctindex + 1], 
+                          self.GetCharAt(currpos - 1) == ord('(') and
+                              self.GetCurrentPos() == self.GetTextLength(),
+                          True )
+                
+
+    def writeOut(self, text):
+        """Replacement for stdout."""
+        self.write(text,type='Output')
+        # TODO : FLUSH?? How to make this update real-time...
+
+    def writeErr(self, text):
+        """Replacement for stderr."""
+        self.write(text,type='Error')
+
+    def redirectStdin(self, redirect=True):
+        """If redirect is true then sys.stdin will come from the shell."""
+        if redirect:
+            sys.stdin = self.reader
+        else:
+            sys.stdin = self.stdin
+
+    def redirectStdout(self, redirect=True):
+        """If redirect is true then sys.stdout will go to the shell."""
+        if redirect:
+            sys.stdout = PseudoFileOut(self.writeOut)
+        else:
+            sys.stdout = self.stdout
+
+    def redirectStderr(self, redirect=True):
+        """If redirect is true then sys.stderr will go to the shell."""
+        if redirect:
+            sys.stderr = PseudoFileErr(self.writeErr)
+        else:
+            sys.stderr = self.stderr
+    
+    # Take a spashot of the WHOLE grouping slice (or slices)
+    # The argument s is either what got added or deleted
+    def UpdateUndoHistoryBefore(self,actionType,s,posStart,posEnd,
+                                forceNewAction=False):
+        uH=self.undoHistory
+        uI=self.undoIndex
+        
+        s=s.replace(os.linesep,'\n')
+        startLine=self.LineFromPosition(posStart)
+        
+        if actionType=='marker':
+            numLines = self.LineFromPosition(posEnd) - startLine
+        else:
+            numLines=s.count('\n')
+        
+        makeNewAction=forceNewAction
+        
+        if forceNewAction:
+            makeNewAction=True
+        elif self.undoIndex==-1:
+            makeNewAction=True
+        elif not uH[uI]['allowsAppend']:
+            makeNewAction=True
+        elif actionType!=uH[uI]['actionType']:
+            makeNewAction=True
+        elif actionType=='insert':
+            if posStart!=uH[uI]['posEnd']:
+                makeNewAction=True
+            else: # This is a continuation of the previous insert
+                uH[uI]['charList'] = uH[uI]['charList']+s
+                uH[uI]['posEnd']   = posEnd # posStart cannot move
+                uH[uI]['numLines'] = uH[uI]['numLines']+numLines
+        elif actionType=='delete':
+            # This is a forward continuation of the previous delete
+            if posStart==uH[uI]['posStart']:
+                uH[uI]['charList'] = uH[uI]['charList']+s
+                uH[uI]['posEnd'] = posEnd
+                uH[uI]['numLines'] = uH[uI]['numLines']+numLines
+            # This is a backward continuation of the previous delete
+            elif posEnd==uH[uI]['posStart']:
+                uH[uI]['charList'] = s+uH[uI]['charList']
+                uH[uI]['posStart'] = posStart
+                uH[uI]['startLine'] = startLine
+                uH[uI]['numLines'] = uH[uI]['numLines']+numLines
+            else:
+                makeNewAction=True
+            
+        elif actionType=='marker':
+            makeNewAction=True
+        else:
+            pass #print 'Unsupported Action Type!!'
+        
+        if makeNewAction:
+            del(self.undoHistory[uI+1:]) # remove actions after undoIndex
+            
+            uH.append({
+              'actionType' : actionType,    # Action type ('insert','delete','marker')
+              'allowsAppend': not forceNewAction, # Can action be joined with others?
+              'charList' : s,        # Character list
+              'posStart' : posStart, # Cursor poition at the start of the action
+              'posEnd' : posEnd,     # Cursor position at the end of the action
+              'startLine' : startLine,  # Start line number,
+              'numLines' : numLines,  # Number of newlines involved
+              'mBStart' : None,       # Starting line for markers BEFORE action
+              'mAStart' : None,       # Starting line for markers AFTER action
+              'markersBefore' : None, # [markers BEFORE action]
+              'markersAfter' : None   # [markers AFTER action]
+             })
+            
+            self.undoIndex+=1
+            
+            # Only update the before when starting a new action
+            start = startLine
+            if actionType=='insert':
+                end = start
+            else:
+                end = start + numLines
+            
+            # Update Marker Info
+            newStart=self.GetGroupingSlice(start)[0]
+            newEnd=self.GetGroupingSlice(end)[1]
+            self.undoHistory[self.undoIndex]['markersBefore'] = \
+                 [self.MarkerGet(i) for i in range(newStart,newEnd+1)]
+            self.undoHistory[self.undoIndex]['mBStart']=newStart
+        
+        self.doHistUpdate=True
+    
+    def UpdateUndoHistoryAfter(self): # s is either what got added or deleted
+        start = self.undoHistory[self.undoIndex]['startLine']
+        if self.undoHistory[self.undoIndex]['actionType']=='delete':
+            end = start
+        else:
+            end = start + self.undoHistory[self.undoIndex]['numLines']
+        
+        newStart=min(self.GetGroupingSlice(start)[0]-1, 0)
+        newEnd=max(self.GetGroupingSlice(end)[1]+1, self.GetLineCount()-1)
+        self.undoHistory[self.undoIndex]['markersAfter'] = \
+             [self.MarkerGet(i) for i in range(newStart,newEnd+1)]
+        self.undoHistory[self.undoIndex]['mAStart']=newStart
+        
+        self.doHistUpdate=False
+    
+    def Undo(self):
+        #ADD UNDO
+        #Skip undo if there are no actions...
+        if self.undoIndex==-1:
+            return
+        
+        uHI=self.undoHistory[self.undoIndex]
+        
+        if uHI['actionType'] in ['insert','delete']:
+            # This will perform the opposite of the action given
+            editwindow.EditWindow.Undo(self)
+        elif uHI['actionType']=='marker': # No text changed, don't pass to STC
+            pass
+        else:
+            #print 'Unsupported actionType in undoHistory!!'
+            return
+        
+        numLines=len(uHI['markersBefore'])
+        for i in range(numLines):
+            self.MarkerSet( uHI['mBStart']+i , uHI['markersBefore'][i] )
+        
+        self.undoIndex-=1
+    
+    def Redo(self):
+        #ADD UNDO
+        # First check to see if there are any redo operations available
+        # Note that for redo, undoIndex=-1 is a valid input
+        if self.undoIndex >= len(self.undoHistory)-1:
+            return
+        self.undoIndex+=1
+        uHI=self.undoHistory[self.undoIndex]
+        
+        if uHI['actionType'] in ['insert','delete']:
+            # This will re-perform the given action
+            editwindow.EditWindow.Redo(self)
+        elif uHI['actionType']=='marker': # No text changed, don't pass to STC
+            pass
+        else:
+            #print 'Unsupported actionType in undoHistory!!'
+            return
+        
+        numLines=len(uHI['markersAfter'])
+        for i in range(numLines):
+            self.MarkerSet( uHI['mAStart']+i , uHI['markersAfter'][i] )
+    
+    def EmptyUndoBuffer(self):
+        editwindow.EditWindow.EmptyUndoBuffer(self)
+        self.undoIndex=-1
+        self.undoHistory=[]
+        self.doHistUpdate=False
+    
+    def CanCut(self):
+        return self.CanEdit() and \
+               (self.GetSelectionStart() != self.GetSelectionEnd())
+    
+    def CanPaste(self):
+        """Return true if a paste should succeed."""
+        if self.CanEdit() and editwindow.EditWindow.CanPaste(self):
+            return True
+        else:
+            return False
+
+    def CanEdit(self):
+        """Return true if editing should succeed."""
+        marker=self.MarkerGet(self.GetCurrentLine())
+        
+        if marker & OUTPUT_MASK:
+            return False
+        elif marker & INPUT_MASK:
+            if self.reader.isreading and not \
+                    (self.MarkerGet(self.GetCurrentLine()) & 1<<INPUT_READLINE ):
+                return False
+            start,end=self.GetIOSlice()
+            sliceStartPos=self.PositionFromLine(start)
+            sliceEndPos=self.GetLineEndPosition(end)
+            """Return true if text is selected and can be cut."""
+            if self.GetSelectionStart() == self.GetSelectionEnd():
+                return True
+            elif self.GetSelectionStart() != self.GetSelectionEnd() \
+                   and self.GetSelectionStart() >= sliceStartPos \
+                   and self.GetSelectionEnd() >= sliceStartPos \
+                   and self.GetSelectionStart() <= sliceEndPos \
+                   and self.GetSelectionEnd() <= sliceEndPos:
+                return True
+            else:
+                return False
+
+    def Cut(self):
+        """Remove selection and place it on the clipboard."""
+        if self.CanCut() and self.CanCopy():
+            if self.AutoCompActive():
+                self.AutoCompCancel()
+            if self.CallTipActive():
+                self.CallTipCancel()
+            self.Copy()
+            self.ReplaceSelection('')
+
+    def Copy(self):
+        """Copy selection and place it on the clipboard."""
+        if self.CanCopy():
+            ps1 = str(sys.ps1)
+            ps2 = str(sys.ps2)
+            command = self.GetSelectedText()
+            command = command.replace(os.linesep + ps2, os.linesep)
+            command = command.replace(os.linesep + ps1, os.linesep)
+            command = self.lstripPrompt(text=command)
+            data = wx.TextDataObject(command)
+            self._clip(data)
+
+    def CopyWithPrompts(self):
+        """Copy selection, including prompts, and place it on the clipboard."""
+        if self.CanCopy():
+            command = self.GetSelectedText()
+            data = wx.TextDataObject(command)
+            self._clip(data)
+
+    def CopyWithPromptsPrefixed(self):
+        """Copy selection, including prompts prefixed with four
+        spaces, and place it on the clipboard."""
+        if self.CanCopy():
+            command = self.GetSelectedText()
+            spaces = ' ' * 4
+            command = spaces + command.replace(os.linesep,
+                                               os.linesep + spaces)
+            data = wx.TextDataObject(command)
+            self._clip(data)
+
+    def _clip(self, data):
+        if wx.TheClipboard.Open():
+            wx.TheClipboard.UsePrimarySelection(False)
+            wx.TheClipboard.SetData(data)
+            wx.TheClipboard.Flush()
+            wx.TheClipboard.Close()
+
+    def Paste(self):
+        """Replace selection with clipboard contents."""
+        
+        #ADD UNDO
+        if self.CanPaste() and wx.TheClipboard.Open():
+            ps2 = str(sys.ps2)
+            if wx.TheClipboard.IsSupported(wx.DataFormat(wx.DF_TEXT)):
+                data = wx.TextDataObject()
+                if wx.TheClipboard.GetData(data):
+                    self.ReplaceSelection('')
+                    command = data.GetText()
+                    command = command.rstrip()
+                    command = self.fixLineEndings(command)
+                    command = self.lstripPrompt(text=command)
+                    # TODO : This is still useful... Add it back other places?
+                    command = command.replace(os.linesep + ps2, '\n')
+                    command = command.replace(os.linesep, '\n')
+                    #DNM--Don't use '... '
+                    command = command.replace('\n', os.linesep)# + ps2)
+                    
+                    cpos=self.GetCurrentPos()
+                    s=command
+                    self.UpdateUndoHistoryBefore('insert', s, cpos,
+                                            cpos+len(s), forceNewAction=True)
+                    self.write(s,type='Input')
+                    self.UpdateUndoHistoryAfter()
+                    
+                    # Makes paste -> type -> undo consistent with other STC apps
+                    self.ReplaceSelection('')
+            wx.TheClipboard.Close()
+    
+    
+    def PasteAndRun(self):
+        """Replace selection with clipboard contents, run commands."""
+        text = ''
+        if wx.TheClipboard.Open():
+            if wx.TheClipboard.IsSupported(wx.DataFormat(wx.DF_TEXT)):
+                data = wx.TextDataObject()
+                if wx.TheClipboard.GetData(data):
+                    text = data.GetText()
+            wx.TheClipboard.Close()
+        if text:
+            self.Execute(text)
+            
+    
+    def Execute(self, text):
+        """Replace selection with text and run commands."""
+        start,end=self.GetIOSlice()
+        startpos=self.PositionFromLine(start)
+        endpos=self.GetLineEndPosition(end)
+        
+        self.SetCurrentPos(endpos)
+        self.SetSelection(startpos, endpos)
+        self.ReplaceSelection('')
+        
+        hasSyntaxError=False
+        result = self.BreakTextIntoCommands(command)
+        if result[0] == None:
+            commands=[command]
+            hasSyntaxError=True
+        else:
+            commands=result
+        
+        for command in commands:
+            command = command.replace('\n', os.linesep)
+            self.write(command)
+            self.processLine()
+
+    def wrap(self, wrap=True):
+        """Sets whether text is word wrapped."""
+        try:
+            self.SetWrapMode(wrap)
+        except AttributeError:
+            return 'Wrapping is not available in this version.'
+
+    def zoom(self, points=0):
+        """Set the zoom level.
+
+        This number of points is added to the size of all fonts.  It
+        may be positive to magnify or negative to reduce."""
+        self.SetZoom(points)
+
+    def LoadSettings(self, config):
+        self.autoComplete = \
+                    config.ReadBool('Options/AutoComplete', True)
+        self.autoCompleteIncludeMagic = \
+                    config.ReadBool('Options/AutoCompleteIncludeMagic', True)
+        self.autoCompleteIncludeSingle = \
+                    config.ReadBool('Options/AutoCompleteIncludeSingle', True)
+        self.autoCompleteIncludeDouble = \
+                    config.ReadBool('Options/AutoCompleteIncludeDouble', True)
+        self.autoCallTip = \
+                    config.ReadBool('Options/AutoCallTip', True)
+        self.callTipInsert = \
+                    config.ReadBool('Options/CallTipInsert', True)
+        
+        self.SetWrapMode(config.ReadBool('View/WrapMode', True))
+
+        self.lineNumbers = \
+                    config.ReadBool('View/ShowLineNumbers', True)
+        self.setDisplayLineNumbers (self.lineNumbers)
+        zoom = config.ReadInt('View/Zoom/Shell', -99)
+        if zoom != -99:
+            self.SetZoom(zoom)
+
+
+    
+    def SaveSettings(self, config):
+        config.WriteBool('Options/AutoComplete', self.autoComplete)
+        config.WriteBool('Options/AutoCompleteIncludeMagic',
+                                            self.autoCompleteIncludeMagic)
+        config.WriteBool('Options/AutoCompleteIncludeSingle',
+                                            self.autoCompleteIncludeSingle)
+        config.WriteBool('Options/AutoCompleteIncludeDouble',
+                                            self.autoCompleteIncludeDouble)
+        config.WriteBool('Options/AutoCallTip', self.autoCallTip)
+        config.WriteBool('Options/CallTipInsert', self.callTipInsert)
+        config.WriteBool('View/WrapMode', self.GetWrapMode())
+        config.WriteBool('View/ShowLineNumbers', self.lineNumbers)
+        config.WriteInt('View/Zoom/Shell', self.GetZoom())
+
+    def GetContextMenu(self):
+        """
+            Create and return a context menu for the slices shell.
+            This is used instead of the scintilla default menu
+            in order to correctly respect our immutable buffer.
+        """
+        menu = wx.Menu()
+        menu.Append(wx.ID_UNDO, "Undo")
+        menu.Append(wx.ID_REDO, "Redo")
+        
+        menu.AppendSeparator()
+        
+        menu.Append(wx.ID_CUT, "Cut")
+        menu.Append(wx.ID_COPY, "Copy")
+        menu.Append(frame.ID_COPY_PLUS, "Copy Plus")
+        menu.Append(wx.ID_PASTE, "Paste")
+        menu.Append(frame.ID_PASTE_PLUS, "Paste Plus")
+        menu.Append(wx.ID_CLEAR, "Clear")
+        
+        menu.AppendSeparator()
+        
+        menu.Append(wx.ID_SELECTALL, "Select All")
+        return menu
+        
+    def OnContextMenu(self, evt):
+        menu = self.GetContextMenu()
+        self.PopupMenu(menu)
+        
+    def OnUpdateUI(self, evt):
+        id = evt.Id
+        if id in (wx.ID_CUT, wx.ID_CLEAR):
+            evt.Enable(self.CanCut())
+        elif id in (wx.ID_COPY, frame.ID_COPY_PLUS):
+            evt.Enable(self.CanCopy())
+        elif id in (wx.ID_PASTE, frame.ID_PASTE_PLUS):
+            evt.Enable(self.CanPaste())
+        elif id == wx.ID_UNDO:
+            evt.Enable(self.CanUndo())
+        elif id == wx.ID_REDO:
+            evt.Enable(self.CanRedo())
+
+    def LoadPySlicesFile(self,fid):
+        invalidFileString = 'Not a valid input format'
+        lineCount=0
+        groupingStartLines=[0]
+        ioStartLines=[0]
+        ioStartTypes=[]
+        removeComment=False
+        
+        # Read the initial three (or four) lines that have version and marker information
+        line=fid.readline()
+        if line == usrBinEnvPythonText:
+            line=fid.readline() # Add the option to place #!/usr/bin/env python2 at the top
+        if line not in pyslicesFormatHeaderText:  print invalidFileString ; return
+        line=fid.readline()
+        if line != groupingStartText:  print invalidFileString ; return
+        line=fid.readline()
+        if line == inputStartText:      ioStartTypes.append('input');removeComment=False
+        elif line == outputStartText:   ioStartTypes.append('output');removeComment=True
+        else:  print invalidFileString ; return
+        
+        self.ClearAll()
+        
+        # Write the file's text to the text area
+        # Capture Marker information to
+        for i in fid:
+            if i==groupingStartText:
+                groupingStartLines.append(lineCount)
+            elif i==inputStartText:
+                ioStartLines.append(lineCount)
+                ioStartTypes.append('input')
+                removeComment=False
+            elif i==outputStartText:
+                ioStartLines.append(lineCount)
+                ioStartTypes.append('output')
+                removeComment=True
+            else:
+                if removeComment:   w=i[1:].replace(os.linesep,'\n')
+                else:               w=i.replace(os.linesep,'\n')
+                self.write(w,'Input',silent=True)
+                lineCount+=1
+        
+        if w[-1]=='\n':
+            lineCount+=1
+        
+        for i in range(lineCount+1):
+            self.clearGroupingMarkers(i)
+            self.clearIOMarkers(i)
+            
+            doMiddle=False
+            doEnd=False
+            if groupingStartLines!=[]:
+                if i == groupingStartLines[0]:
+                    self.MarkerAdd(i,GROUPING_START)
+                    del groupingStartLines[0]
+                elif i+1 == groupingStartLines[0]:
+                    doEnd=True
+                else:
+                    doMiddle=True
+            elif i==lineCount-1:
+                doEnd=True
+            else:
+                doMiddle=True
+            
+            if doMiddle:
+                self.MarkerAdd(i,GROUPING_MIDDLE)
+            elif doEnd:
+                self.MarkerAdd(i,GROUPING_END)
+            
+            doMiddle=False
+            doEnd=False
+            if ioStartLines!=[]:
+                if i == ioStartLines[0]:
+                    # Delete the old ioStartTypes (keep the current copy for later use)
+                    if i>0: del ioStartTypes[0]
+                    
+                    if ioStartTypes[0]=='input':
+                        self.MarkerAdd(i,INPUT_START)
+                    elif ioStartTypes[0]=='output':
+                        self.MarkerAdd(i,OUTPUT_START)
+                        self.MarkerAdd(i,OUTPUT_BG)
+                    else:
+                        #print 'Invalid Type!';
+                        return
+                    
+                    # Only delete markers we are totally finished with...
+                    # Keep one more "StartTypes" than "StartLines"
+                    del ioStartLines[0]
+                elif i+1 == ioStartLines[0]:
+                    doEnd=True
+                else:
+                    doMiddle=True
+            elif i==lineCount-1:
+                doEnd=True
+            else:
+                doMiddle=True
+            
+            if doMiddle:
+                if ioStartTypes[0]=='input':
+                    self.MarkerAdd(i,INPUT_MIDDLE)
+                elif ioStartTypes[0]=='output':
+                    self.MarkerAdd(i,OUTPUT_MIDDLE)
+                    self.MarkerAdd(i,OUTPUT_BG)
+                else:
+                    #print 'Invalid Type!';
+                    return
+            elif doEnd:
+                if ioStartTypes[0]=='input':
+                    self.MarkerAdd(i,INPUT_END)
+                elif ioStartTypes[0]=='output':
+                    self.MarkerAdd(i,OUTPUT_END)
+                    self.MarkerAdd(i,OUTPUT_BG)
+                else:
+                    #print 'Invalid Type!';
+                    return
+                
+        self.EmptyUndoBuffer() # maybe not?
+
+    
+    def SavePySlicesFile(self,fid):
+        addComment=False
+        fid.write(usrBinEnvPythonText.replace('\n',os.linesep))
+        fid.write(pyslicesFormatHeaderText[-1].replace('\n',os.linesep))
+        for i in range(self.GetLineCount()):
+            markers=self.MarkerGet(i)
+            if markers & ( 1<<GROUPING_START | 1<<GROUPING_START_FOLDED ):
+                fid.write(groupingStartText.replace('\n',os.linesep))
+            if markers & ( 1<<INPUT_START | 1<<INPUT_START_FOLDED ):
+                fid.write(inputStartText.replace('\n',os.linesep))
+                addComment=False
+            if markers & ( 1<<OUTPUT_START | 1<<OUTPUT_START_FOLDED ):
+                fid.write(outputStartText.replace('\n',os.linesep))
+                addComment=True
+            if addComment: fid.write('#')
+            fid.write(self.GetLine(i).replace('\n',os.linesep))
+    
+    # FIX ME!!
+    def LoadPyFileAsSlice(self,fid):
+        curpos=self.GetCurrentPos()
+        start,end = self.GetGroupingSlice()
+        
+        endpos=self.GetLineEndPosition(end)
+        self.SetCurrentPos(endpos)
+        self.SetSelection(endpos, endpos)
+        
+        text='\n'+fid.read()
+        self.write(text,'Input')
+        newpos=self.GetCurrentPos()
+        
+        self.SetCurrentPos(curpos)
+        self.SetSelection(curpos,curpos)
+        self.SplitSlice()
+        #self.SetCurrentPos(newpos)
+        #self.SetSelection(newpos,newpos)
+    
+    def hasChanged(self):
+        """Return True if contents have changed."""
+        return self.GetModify() or self.NeedsCheckForSave
+        
+        
+        
+## NOTE: The DnD of file names is disabled until we can figure out how
+## best to still allow DnD of text.
+
+## #seb : File drag and drop
+## class FileDropTarget(wx.FileDropTarget):
+##     def __init__(self, obj):
+##         wx.FileDropTarget.__init__(self)
+##         self.obj = obj
+##     def OnDropFiles(self, x, y, filenames):
+##         if len(filenames) == 1:
+##             txt = 'r\"%s\"' % filenames[0]
+##         else:
+##             txt = '( '
+##             for f in filenames:
+##                 txt += 'r\"%s\" , ' % f
+##             txt += ')'
+##         self.obj.AppendText(txt)
+##         pos = self.obj.GetCurrentPos()
+##         self.obj.SetCurrentPos( pos )
+##         self.obj.SetSelection( pos, pos )
+
+
+
+## class TextAndFileDropTarget(wx.DropTarget):
+##     def __init__(self, sliceshell):
+##         wx.DropTarget.__init__(self)
+##         self.sliceshell = sliceshell
+##         self.compdo = wx.DataObjectComposite()
+##         self.textdo = wx.TextDataObject()
+##         self.filedo = wx.FileDataObject()
+##         self.compdo.Add(self.textdo)
+##         self.compdo.Add(self.filedo, True)
+        
+##         self.SetDataObject(self.compdo)
+                
+##     def OnDrop(self, x, y):
+##         return True
+    
+##     def OnData(self, x, y, result):
+##         self.GetData()
+##         if self.textdo.GetTextLength() > 1:
+##             text = self.textdo.GetText()
+##             # *** Do somethign with the dragged text here...
+##             self.textdo.SetText('')
+##         else:
+##             filenames = str(self.filename.GetFilenames())
+##             if len(filenames) == 1:
+##                 txt = 'r\"%s\"' % filenames[0]
+##             else:
+##                 txt = '( '
+##                 for f in filenames:
+##                     txt += 'r\"%s\" , ' % f
+##                 txt += ')'
+##             self.sliceshell.AppendText(txt)
+##             pos = self.sliceshell.GetCurrentPos()
+##             self.sliceshell.SetCurrentPos( pos )
+##             self.sliceshell.SetSelection( pos, pos )
+
+##         return result