Xcos examples from textbooks and for blocksHEADmaster

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diff --git a/Working_Examples/3432/CH6/EX6.4/DEPENDENCIES/fig_settings.sci b/Working_Examples/3432/CH6/EX6.4/DEPENDENCIES/fig_settings.sci
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+//------------------------------------------------------------------

+//figure handel settings

+f=get("current_figure"); //Current figure handle

+f.background=8; //make the figure window background white

+l=f.children(1); 

+l.background=8 ;//make the text background white

+id=color('grey');

+xgrid(id);

+//------------------------------------------------------------------

diff --git a/Working_Examples/3432/CH6/EX6.4/Ex6_4.sce b/Working_Examples/3432/CH6/EX6.4/Ex6_4.sce
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+//Example 6.4

+//Bode Plot with Complex Poles.

+

+xdel(winsid())//close all graphics Windows

+clear;

+clc;

+//------------------------------------------------------------------

+//System transfer function and its bode plot

+K=10;

+s=poly(0,'s');

+Gs=syslin('c',(K)/(s*(s^2+0.4*s+4)));

+//The bode plot of the system

+

+fmin=0.1/2/%pi; //mininmum frq. in Hz for response (0.1 rad/sec)

+fmax=10/2/%pi; //maximum frq. in Hz for response (100 read/sec)

+//------------------------------------------------------------------

+//Bode plot for frequency in Hz (scilab ver. 5.4.1)

+//bode(g,fmin,fmax); 

+//OR 

+//Bode plot for frequency in rad/sec (scilab ver. 5.5.1)

+bode(Gs,fmin,fmax,0.01,"rad") 

+

+//------------------------------------------------------------------

+title(['Bode plot for a transfer function with complex poles';...

+ '(a) magnitude...

+ (b) phase'],'fontsize',3)

+

+//------------------------------------------------------------------

diff --git a/Working_Examples/3432/CH6/EX6.4/Ex6_4_f0.pdf b/Working_Examples/3432/CH6/EX6.4/Ex6_4_f0.pdf
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+++ b/Working_Examples/3432/CH6/EX6.4/Ex6_4_f0.pdf