Tag Filter
Each revision of a source file can have optional tags placed on it.  These tags are typically used for build history, merge history, or release management.  These tags are simple strings and may clutter a revision graph if not important.  If tags are set to be shown inside the revision graph nodes, then they can be filtered based on a regular expression.  The filter can be either to include or exclude the tags that match the filter based on the show/hide toggle.  For proper regular expression syntax, see http://java.sun.com/javase/6/docs/api/java/util/regex/Pattern.html
Tag Filter