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I tweaked the comment in Form, and noticed a reference to MaskedForm. What is this? It seems to be gone at this point. DisplayObject has no subclass that looks like a masked form, and searching for "mask" only turns up CursorWithMask.
What should the comment of BitBlt say, instead of referring to this non-existing class?
The part of BitBlt that is in question is: "Colors can be remapped at the same depth. Sometimes a Form is in terms of colors that are not the standard colors for this depth, for example in a GIF file. Convert the Form to a MaskedForm and send colorMap: the list of colors that the picture is in terms of. MaskedForm will use the colorMap when copying to the display or another Form. (Note also that a Form can be copied to itself, and transformed in the process, if a non-nil colorMap is supplied.)"
Lex
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