[plt-dev] Scrolling of files with large snips

It looks like DrScheme buffers manage scroll positions using the line- 
at-the-top-of-the-screen.  This means that for large snips--those  
taller than the window--there's no way to see the bottom half of the  
snip, because there's no intermediate scroll position between line- 
with-the-big-snip and (+ 1 line-with-the-big-snip).

E.G.:  Evaluate this program:

(require 2htdp/image)

(circle 500 "solid" "yellow")

On the Mac, for screens less than 1000 pixels tall, there appears to  
be no way to inspect the bottom part of the circle.

IIUC, this is not a bug but a change request.

I guess the best question might be this:  is this the kind of thing  
that might be fixed by the re-implementation of wx in scheme, or not?

John

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