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Your code sounds interesting however I seem to have managed, so far
with the redisplayer method (it is really trivial).
I am not sure about several comments you made and would appreciate
1. You mention that graphics operations don't work correctly in G7.2
We are currently using G7.2 yet I don't seem to have any problems
printing garphics. Could you enumerate the problems?
2. You mention mirror-image printer streams and redisplay code. Although
it is, no doubt possible to use these, the default (at least with
do-redisplay) is to have the printer stream behave as a regular window
stream. Using a redisplayer requires onlu one extra line of code.
I may be missing something important though, Am I?
3. Your function requires only the name of the window. Do dynamic windows
contain high level information about their contents or are you simply
producing a postscript bitmap output?