2010/2/12 Peter > > Just being able to read a drawing or documentation created 15 years > ago can be a serious problem, and I have spent many an unpleasant workday > tracking down obscure text editors or decoding documentation from dying > floppies, which were written using some extinct binary markup text editor > under Windows 3.11 or before that. Ditto printed circuit board drawings > and schematics. > > Except for the cases you mention where the company *really* wants to burn bridges to obsolete technology, in today's world is not exceptional to have virtual machines mounted with yesterday's technology, which makes working with obsolete technology much easier than before. This is being implemented in more and more companies. As long as you have a well defined standard for a VM image, you are done for the long term support regardless of how old a software document or application may become. -- Ariel Rocholl Madrid, Spain -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist