Have you tried the Enform manuals??
You can find all of the NonStop manuals by going to
then clicking on the link for the software release you are using (such as "HP Integrity NonStop H-Series"). That will take you to a page that lists all the manuals in order by title. It is a long list, and some of the manuals are not named exactly as you might think. If you do not find the manual you are looking for at the point in the list where you think it should be, try using your web browser's "find" function to search the page for a the product name or another word you expect will be in the title.
For example, in the H-Series manual set, there are two manuals about ENFORM. One is titled "Enform Plus Reference Manual". The other is titled "Introduction to ENFORM", so it appears in the "I" portion of the list, not in the "E" section, where the first manual appears.
If you try searching for a manual about another product, but cannot find what you are looking for, post here to say what you are looking for, and someone probably can tell you the title to look for.