Yes. I was not clear: My impression of the OP is that most of the users or intended users will need good documentation on both the applied math and the APIs,

Yes. I was not clear: My impression of the OP is that most of the users or intended users will need good documentation on both the applied math and the APIs, details of input files, etc. My post was to say that for the applied math part, good documentation is and long has been available.