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Re: Screen update and feeling the bits between your toes writes:
 > This is exactly the facility that DRAGGING-OUTPUT is intended to
 > provide, except that it presently uses REPLAY instead of "bitblt" to do
 > the feedback during dragging.  DRAGGING-OUTPUT could be changed to use
 > "bitblt", except that since "bitblt" can paint only rectangular regions,
 > the dragging of non-rectangular objects could damage some things that
 > should not be damaged.

Just a note... Under window systems like X11 and NeWS, CopyArea
(bitblt) is affected by the current clipping region and can, in fact,
paint non-rectangular areas.

-- Jim Mayer
                                        Phone: (716) 422-9407
Webster Research Center                 Intelnet phone: 8*222-9407
Xerox Corporation                       Internet Email:
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