We have in our autocad dwg files ( 2002) lots and lots of layer filters and these take a while to delete. They come into the files from other users outside our office. First- is there a way to prevent their importation? Second is there a quick way to delete them? We currently open the layer control box, select delete and then put a stapler on the enter button and wait. If there is a better way to deal with this would love to hear it.