Ever wish you could work in autocad with just a couple of layers on at a time without having to use the layers manager to turn layers on and off? Well, you can! By using the command LAYISO you can simply select which layers you want to isolate. When you are done editing those layers you can use the command LAYUNISO, and autocad will restore the layers which were previously hidden. These commands are useful when there are a lot of layers in a drawing and the drawing is getting difficult to edit.