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Re: Sprites

Thanks for the response.  Sorry for being unclear.

Assume that a particular presentation has already been output both to the
screen and to the internal presentation history data structure.
  The documented behavior of dw:erase-displayed-presentation is to erase
the presentation from the screen and delete it from the history data structure.
  I'd like to know how to do the second (delete) without doing the first (erase).

Thanks again,               John Myers~~