14sep11
Tkinter is for making widgets. See William Baker's example "sierp.py".
Here we hope to discover if the Tkinter module will work for the 
Hippocket programs.
http://www.pythonware.com/library/tkinter/introduction/
"An Introducation to Tkinter" by Fredrik Lundh (who invented Tkinter?)

The strategy is to deconstruct Baker's Tkinter program using the 
journalling technique (i.e. commenting an interactive experiment).

Stopped after a couple of hours because I still haven't discovered 
the first step .... draw a pixel. It looks like Tkinter.Canvas 
doesn't like "points", i.e. pixels. So Baker drew a tiny line for
a pixel ... a kludge. But since we want visible "points" anyway,
we'll probably end up having to draw a little filled rectangle 
(a "fat-bits" from the dawn of MacPaint) anyway.

However, I stopped after not finding the primite way of drawing
just a line. Checking out turtle.py didn't help because that is
written at too high level to reveal the simplest way.