We currently put vague references in the revision block. That reference is usually enough to refresh my memory and remember most of the ECN. If it was before my time, I need more detail or I just don’t remember I look up the ECN, which is listed in the revision block as well. Ted T. -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of James Head Sent: Monday, March 16, 2009 3:19 AM To: [log in to unmask] Subject: Re: [TN] Future SHALLs (IPC-2610) "It's FAR easier to track ECN data in a PDM system than to try to read abbreviations and vague referneces that fit in a revision block. Not to mention often adding pages and pages of confusion that the current vendor does not need." This isn't just a "shall" for IPC, it's also a requirement for many other standards-bodies, external auditors and certification bodies etc. who want to see details of the revision history on any drawing. James James Head BEng CID MIIE MIET Senior PCB CAD Engineer Crowcon Detection Systems Limited 2 Blacklands Way Abingdon Business Park ABINGDON OX14 1DY Telephone: +44 (0) 1235 557700 extension (9) 289 Fax: 07092024504 Email: [log in to unmask] ******************************************************** The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. If you are not the addressee, any disclosure, reproduction, copying, distribution, or other dissemination or use of this transmission in error please notify the sender immediately and then delete this e-mail. E-mail transmission cannot be guaranteed to be secure or error free as information could be intercepted, corrupted lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept liability for any errors or omissions in the contents of this message which arise as a result of e-mail transmission. If verification is required please request a hard copy version. ******************************************************** --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------