I wanted to relate a FIX to the problem of poor performance in Allegro 15.2. Turn off all classes, under Manufacture | silkscreen I was waiting 2-3 minutes to return to idle after moving a part. After changing the Ref des class to none, the rest were none already, the delay to idle is almost instantly. __________________________________________________ systems agere 76 Sandy Point Road Yarmouth, Maine 04096 USA Richard Weinberg Tel: 207 846 4539 Applications Engineer rweinberg@xxxxxxxxx ReferenceDesigns ___________________________________________________