[V8i Ss3] Deleting a Level and it Elements

I'm trying to clean up cells in a library. According to Level Usage, it's used but not in Cell Definitions, Application, Reference attachments, multiline styles or dim styles. The Level Properties Usage Tab says there are 3 lines.

A Fit says no elements found. A delete fence contents inside or void says no elements in or outside of fence. Select All does nothing. Set Range does not display a range box. Attempting to place it as a cell inside itself does not place anything - no new cell appears, no new range box, nothing.

I thought there was a keyin to delete a level and anything on its level, but cannot seem to locate that key-in.