As far as it concerns standards for documentation and especially coding, have a look at the pd-dev list. If you have experience with writing you can propose solutions there I guess. Also there have been threads about good documentation within this pd-list. I remember a discussion about help-files within pd lately. On the net it's free to write your own documentation so that's why there are several sources with several opinions and solutions, but personally I'm glad something like flossmanuals exists.
And about the arrays, let's bring that discussion back to the other thread you posted called "[PD] Question About Arrays" to keep at least this pd-list-documentation clear.

Funs