How Do I Display Subversion Branch/Tag Annotations?
Annotations are additional information that are displayed for each source file in the IDE. For example, if you turn on Subversion Status Labels annotations, you can see the branch and tag names for your files in the Projects and Files windows.
You may do this by choosing View > Show Versioning Labels in the main menu.
For more information, see: How Do I Customize the Subversion Annotations?