I use the lisp "Clipit" frequently to zero in on certain areas of an xref. What I don't like is that you can't undo or add clips after the initial command. I'm not sure if anyone else uses this lisp. If so is it able to be modified so it can be undone or altered later. I'm sorry I can't access the code right now to post. I'm very new to lisps and coding for cad so all help is appreciated... I will post the code ASAP or if any of you have it please feel free to post it for those that don't know it...