GetDWIM adds four heuristics about how to find a file. GetDWIM is invoked when you select a file name, and click the "Get" entry in the menu of a Tioga viewer, but Tioga can't easily find the selected file.

The first heuristic involves mesa source files. If the Tioga viewer whose "Get" button you clicked is on a mesa source file, GetDWIM will process that source, looking for renaming IMPORTS and OPEN clauses. If the text you were trying to "get" had the form foo.bar, and there is a renaming of foo to glotz, the "get" is transformed into a "get" of glotz.bar. This feature is enabled/disabled with the UserProfile entry GetDWIM.TryRenaming: Boolean (defaults to TRUE).

Another heuristic involves DF-files. If the Tioga viewer whose "Get" button you clicked is on a DF-file, GetDWIM will process the DF-file, looking for the filename you selected. This feature is enabled/disabled with the UserProfile entry GetDWIM.ProcessDF: Boolean (defaults to TRUE).

Another heuristic says that files whose names differ only in the extensions are often found in the same directory. The third heuristic assists this; it says that when a local name has an attachment to a remote name, the remote name's directory is a good place to look. These last two are enabled/disabled by the UserProfile entries GetDWIM.AssociateExtensions and GetDWIM.FollowAttachments (both take Booleans and default to TRUE).