In Allegro : File >> Export>> Techfile , llly File >> Import >> Techfile. Tech file contains physical constrain details (Spacing / Physical sets) , Cross section (Layer stack up) details. Thanks, Ismail.A. ________________________________ From: jwages <jwages@xxxxxxxxx> To: icu-pcb-forum@xxxxxxxxxxxxx Sent: Friday, 21 August, 2009 7:00:48 PM Subject: [PCB_FORUM] Re: How to export constraint Within the Allegro constraint manager: File >> Export >> Constraints Jim S. Wages SR PCB Layout Designer H) 919-237-3915 C) 919-484-2963 From:icu-pcb-forum-bounce@xxxxxxxxxxxxx [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Hieu D. Duong Sent: Friday, August 21, 2009 5:30 AM To: icu-pcb-forum@xxxxxxxxxxxxx Subject: [PCB_FORUM] How to export constraint Hi all, I would like to export constraints from one board to another board. I don’t know whether Allegro could do it or not? If yes, please show me the way to do that. Thank you very much. Best Regards, Hieu Duong Love Cricket? Check out live scores, photos, video highlights and more. Click here http://cricket.yahoo.com