Files managed by Microsoft's Visual SourceSafe may have (at the user's option) a file version header in the form of:
$Header:
in a comment line. It would be nice if there is an option to ignore such statement so that files that differ merely in the version stamp would not be flagged as different.
Alternatively, a more general configuration option would be the ability to ignore comments with a specified string (or any string -- in which case all comments would be ignored -- another feature!)