I wholeheartedly disagree with that assessment of a software manual.  It should contain all of the functionality of the software, yes.  It should also be explanatory or tutorial in how to actually use the software either integratedly with the function or separately (more prefered).  Expecting people to rely upon third-party books, classes, and videos for such things is like selling cars without tires - that you then need to buy separately!

The manual doesn't have to be thorough in usage regards, but it must have enough information that a new user can run, configure, and use the software at at least the novice level.  And the usage/tutorials could be a separate manual or included videos or whatnot.  As long as it's not snake oil on the side.  See, otherwise I return the software and buy one that does have this. ;)

C makes it easy to shoot yourself in the foot. C++ makes it harder, but when you do, you blow your whole leg off.

 -- Bjarne Stroustrup

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