They try and list all known DEC manuals and print sets that ever existed, so just because something is listed in the index page (and has a subsidiary page which is linked from there), doesn't mean there's a known copy online. If you look in the "Status" column on the index page, it will be blank if no online copy is known, or "Online" if there is a copy (to which they link, through the subsidiary page). I have mixed reactions to it. I use it some, often to see if something is online at all. (If I buy a manual, I usually check, to see if I need to scan it, and get it to Al. Have a backlog at the moment, sigh.) The problem is that there are 'false negatives'; i.e. entries where they say 'none known online', but which are available. E.g. KE11-A Field Maintenance Print Set http://manx-docs.org/details.php/1,9358 KE11-B Field Maintenance Print Set http://manx-docs.org/details.php/1,9361 Both listed as not online, but they are: the KE11-A is on Bitsavers, and the KE11-B I also just found (IIRC, on one of the collections they list as indexed). So I'd use it as a 'first stop', but don't depend on the negatives to be accurate - do a Web seach if it pans out. Noel