I think the description of RxFuncAdd in RexxRef 7.4.51 needs to include a bit of a description of each parm.
What is the difference between 'name' and 'procedure' for instance.
It should also be stated that if procedure is not provided it defaults to the same value as name. (I have never seen a call to rxFuncAdd where these differ - why would they?)
How do you determine 'module' (is it the first part of the filename of the .dll file?
It might also be appropriate to say 'See also Appendix A5 of the Rexx Programmers guide' here
Sorry that I don't have enough knowledge of what is going on to write the text myself.