Deletes a file from your disk, and also marks it as having (defunct) status in the AccuRev workspace. A comment dialog enables you to enter comments for the defuncted element.
Other users will continue to see the file in their workspaces. When you Promote a defunct element to the backing stream, it disappears entirely from the workspace stream, and from the File Browser display. The element then becomes (defunct), hence also active, in the backing stream.
You can also Defunct a directory. But before doing so, consult the description of the Defunct command in the AccuRev Command Line Interface User's Guide.