Per cancellare in blocco i nomi delle impostazioni di pagina di stampa non utilizzati, si può utilizzare il lisp DelPageSetup.

"If you want to erase (delete, remove, purge) a named page (plot) setup from your AutoCAD drawing, you can right-click on it in the PAGESETUP command dialog and choose Delete.
For multiple setups or scripts you can use the DelPageSetup LISP utility. It accepts single setup names and wildcards (like "mypage*" or just "*" - which deletes all page setups)."