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diff --git a/grc/src/gui/Constants.py b/grc/src/gui/Constants.py
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+"""
+Copyright 2008 Free Software Foundation, Inc.
+This file is part of GNU Radio
+
+GNU Radio Companion is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+GNU Radio Companion is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+"""
+
+##################################################
+## Global Titles
+##################################################
+
+##The name to appear in the main window for a flow graph that has not been saved to file.
+NEW_FLOGRAPH_TITLE = 'untitled'
+
+##The prefix title on the main window.
+MAIN_WINDOW_PREFIX = "GRC"
+
+##################################################
+## Signal block rotations
+##################################################
+
+##direction of rotation left.
+DIR_LEFT = 'left'
+
+##direction of rotation right.
+DIR_RIGHT = 'right'
+
+##################################################
+## Dimension constraints for the various windows (in pixels)
+##################################################
+
+##main window constraints
+MIN_WINDOW_WIDTH = 600
+MIN_WINDOW_HEIGHT = 400
+
+##dialog constraints
+MIN_DIALOG_WIDTH = 500
+MIN_DIALOG_HEIGHT = 500
+
+##static height of reports window
+REPORTS_WINDOW_HEIGHT = 100
+
+##static width of block selection window
+BLOCK_SELECTION_WINDOW_WIDTH = 200
+
+##################################################
+## Dragging, scrolling, and redrawing constants for the flow graph window in pixels
+##################################################
+
+##How close can the mouse get to the window border before mouse events are ignored.
+BORDER_PROXIMITY_SENSITIVITY = 50
+
+##How close the mouse can get to the edge of the visible window before scrolling is invoked.
+SCROLL_PROXIMITY_SENSITIVITY = 30
+
+##When the window has to be scrolled, move it this distance in the required direction.
+SCROLL_DISTANCE = 15
+
+##The redrawing sensitivity, how many seconds must pass between motion events before a redraw?
+MOTION_DETECT_REDRAWING_SENSITIVITY = .02
+
+##How close the mouse click can be to a connection and register a connection select.
+CONNECTION_SELECT_SENSITIVITY = 5
+
+##################################################
+# A state is recorded for each change to the flow graph, the size dictates how many states we can record
+##################################################
+
+##The size of the state saving cache in the flow graph (for undo/redo functionality)
+STATE_CACHE_SIZE = 42