If I link a drawing into 2010 to use as a background, can I turn on and off layers? I would like to do that so I can de-clutter the areas in which I want to use it as a base for layout of walls etc. But then I would like to turn them back on later. I see under the import instance tab there is a Delete Layers, and Query option but no on/off or freeze/thaw. Also I cannot use the normal temporary hide/isolate tool as it will only select the whole dwglinked file. Thanks for any advice.