I often find myself marking up drawings to send to architects or EEs.  One of the things they would prefer that I do is enclose any revised areas on markups with a "revision cloud", essentially a series of arcs joined together to make the walls of the box I'm drawing around revisions.  I understand that this is probably somewhat more involved than setting a line to dot-dash or the like, but has there been any thought of this?  It would also be useful on demolition documents.

Thanks!