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Common Ternary raster operation codes

 SRCCOPY     dest=source
 SRCPAINT    dest=source OR dest
 SRCAND      dest = source AND dest
 SRCINVERT   dest = source XOR   dest
 SRCERASE    dest = source AND (not dest )
 NOTSRCCOPY  dest = (not source)
 NOTSRCERASE dest = (not source) AND (not dest)
 MERGECOPY   dest = (source AND pattern)
 MERGEPAINT  dest = (NOT source) OR dest
 PATCOPY     dest = pattern
 PATPAINT    dest = DPSnoo
 PATINVERT   dest = pattern XOR dest
 DSTINVERT   dest = (not dest)
 BLACKNESS   dest = BLACK
 WHITENESS   dest = WHITE