Revert to Basis is the GUI version of the CLI
purge command. The name “Revert to Basis” is something of a misnomer, as the operation would more accurately be named “Revert to Last Update Version” (that is, replace the current workspace version with the version from the backing stream based on the last time the workspace was updated).
Since the Diff Against... GUI command offers both “Backed” and “Basis” options, and
Revert to... also offers a “Most Recent Version” option, it is easy for new users to be confused by these different features. This section illustrates the differences between Backed and Basis versions of an element, and what a user can expect from various AccuRev GUI commands.