Schizophrenia beats being alone !

Concept1 : Window Positioning
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Idea:
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In OpenGL we define the position of the window using 
the command glutInitWindowPosition(x, y).  
Here x, y are integers which define the window
position on the screen.

Experiment:
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Change the Win X and WinY values using the slider bars 
provided. Click on 'Execute' to reexecute the code.

Look at the code window and you should see the values to 
glutInitWindowPosition() change in the main function to 
those set by you.  This function is highlighted in red.

Exercise
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Can you tell where the window position (0,0) is located 
and also how the X, and Y axis are defined ?