2. What is a .gid file and what program opens it?
Probably more information than you want or need, but the following
comes from the online help for Microsoft Help Workshop, a tool for
creating WinHelp (.hlp) files.
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A configuration (.gid) file is a hidden file that WinHelp creates when
a Help file is first opened, or when a Help file is updated. A .gid
file contains information about the Help file, including:
* Binary representation of the contents (.cnt) file, including jumps
and commands, after it has been processed. Only topics that were found
during processing are stored.
* The filenames and titles of all Help files included in the contents
file.
* Keywords from other Help files (if :Index statements were used in
the contents file).
* List of which files have full-text search index (.fts) files.
* The size and location of Help windows and dialog boxes.
WinHelp creates a .gid file for each Help file that does not have a
contents file, or for each contents file -— even if that contents file
is for a family of Help files.
If a user deletes a .gid file, WinHelp creates a new one the next time
the user opens the Help file.
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Pete (Microsoft Help MVP)