please consider making a non-internet manual. I have not seen a manual for KompoZer.
Since people usually expect a non-internet manual, I suggest you look into Microsoft HTML Help Workshop SDK 1.4. http://msdn.microsoft.com/en-us/library/ms670169\(VS.85).aspx
Menu Help > Help Contents (or hit F1).
KompoZer is free and cross-platform. Microsoft HTML Help Workshop is proprietary and Windows-specific.
you can use hh to view html help on linux and DarWINE. or you can provide help on a PDF. but there should be some sort of documentation I should hope.