The pages on this site contain documentation for very old MS-DOS software,
purely for historical purposes.
If you're looking for up-to-date documentation, particularly for programming,
you should not rely on the information found here, as it will be woefully
out of date.
PWB Message
<name>: mark exists. Update?
An attempt was made to change the existing mark <name>.
Response Action
Y (yes) Redefine the mark.
N (no) Do not redefine the mark.
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