Although the supported help system for Domino Designer has been the Eclipse Help System since Release 8.5, many long time Domino Designer users still like to have the option of using the former NSF help file (the support help mechanism prior to 8.5) when looking up reference information. The NSF format can be a portable and offline alternative for keeping legacy programming information on a laptop or desktop computer.
 

To fulfill the many requests to make the former NSF help (frozen at Release 8.5.1) still available, this file has been made available for download at the IBM developerWorks site. If your old NSF file was lost or moved by a recent product upgrade or you just feel like having a backup copy, you may now find the NSF file for downloading at the following link: Domino Designer 8.5.1 NSF Help file now available for customer download

http://www.ibm.com/developerworks/lotus/documentation/dominodesigner/