WHILE in Corridor Section Editor

Yesterday I learned about how the Publish command turns the SAVETIME variable to 0 so it doesn't crash while publishing. I thought this could be a useful feature to add to using the Corridor Section Editor (in Civil 3D) because the autosave tends to cause problems there as well. I was going to write a lisp to change the SAVETIME variable to a higher value, while in the corridor section editor, but I can't think of how to make the while statement. Is there a variable stating that the corridor section editor is open?