On Thu, 2011-11-10 at 22:48 +0000, Richard Shann wrote:
> hmm, well, specifically there is a command d-BackgroundColor or
> something like that which could be invoked from the scheme window to
> see
> if the draw routine is firing and what it is doing. 

(d-SetBackground 0)

and then (d-RefreshDisplay) should make everything black.

Richard



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