[PythonCAD] PythonCAD changes and documentation

[Stuart Brorson]

[. . .  snip! . . . ]

> > Other random notes:
> > 
> > *  Selection mechanism:  It would be nice if you could just click on
> > an object (rather than doing "edit -> select") to select it.  Are
> > there any objections to that behavior?
>  
> Allowing this behavior depends on how it is implemented. Going the
> 'Edit' -> 'Select' route clearly indicates the the program is now in
> a selection mode.

My suggestion:  I am thinking about how to indicate that an object is
selected.   I propose that any and all selected objects change color
to something different, e.g. white.  This has at least two good
features:

1.  You can immediately tell that you have selected the objects you
wanted to select.

2.  It reminds the user that he is in select mode, and has selected
something.  This answers your issue above.  Then, leaving the ability
to select on all the time doesn't present a problem.

I also propose that if you hit <escape> then all selections are
cleared.  Comments?

Meanwhile, I can look at the code to see how this feature might be
implemented. . . . .

Stuart