If WinHelp cannot create the .gid file in the same location as the contents file, it will try to create the .gid file in the \Windows\Help folder or in the Windows folder if no Help folder exists.
If multiple users try to build a .gid file on a network server at the same time, only the first attempt will actually create the .gid file. Other users will see an animation window until the first attempt to create a .gid file succeeds.
Updating a family of Help files