Actually those situations only occur once in a while. Mostly are in atrrib or text cases. One time I recall, the atrrib txt in room-name blks which came from the client were at 6" high. Our standard is 4.5. I tried to used attredef to fix it but all room number turn to 104 on every block. So I have to go to each block and scale it down.
On the screen, I cannot tell the diff between 6" blk and 4.5" blk. That was when blipmode came in handy. Now with the tick mark, I can see the blocks that had been scaled down so I did not pick them again.