How do you design end-user assistance?
The autumn 2011 edition of the award winning ISTC journal Communicator includes an introduction to SeSAM. Download it from http://www.sesam-info.net/Communicator_2011_Autumn_SeSAM.pdf.
Designing for findability is a key if you want to be successful. Check out SeSAM if you spend a lot of effort thinking about what type of information to include in manuals and how to organize content, and if your end users are complaining about the difficulty in finding answers.