bitblt /bit'blit/ /n./ [from BLT, q.v.] 1. Any of a
family of closely related algorithms for moving and copying
rectangles of bits between main and display memory on a bit-mapped
device, or between two areas of either main or display memory (the
requirement to do the Right Thing in the case of overlapping
source and destination rectangles is what makes BitBlt tricky).
2. Synonym for blit or BLT. Both uses are borderline
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