Those layers created by SOLxxxx are frozen is specific viewports. They must be thawed in all viewports to be purged. Use VPLAYER THAW <layer names> ALL.
Then purge.
Another software does not UNDO the ZOOM commands. I have seen users undo things that were no longer visible on the screen trying to get back to what they thought was the last thing they did, only to find several wasted minutes re-building stuff that didn't need to be undone.
I want UNDO to do...
Prior to R2000, attribute were propmted for in the order they were selected during creation of the block. For R2000 and later it is the REVERSE order of selection during creation. It can be changed by redefining the block and attributes using ATTREDEF.LSP
See:
http://www.mcneel.com/autoutil.htm
Depends on the CONTRACT. If the file is a deliverable, it's his file, not yours.
If the file was never specified as a deliverable in the contract, you are under no obligation to provide it. If you wish to do so to keep your client happy (bill him for it or not), then do so with the...
First off, don't rotate your model, rotate your view. You can do that with a couple of different tools, VIEWPOINT, DVIEW, 3DORBIT or the VIEW toolbar. If you're comfortable with UCS control, you can even use that to rotate a view of the model by setting a UCs then using the PLAN comman.
The...