About Business Functions and System Functions

I am looking for information on the Business Functions and System Function of the JD Edwards. The reason gives to look for this information it is motivated to avoid the development of the already existent functionalities in C. I would like to know if some listing exists of quality where the Business Functions and the System Functions are defined and shown their functionalities.

You can find the complete list of all BSFN's on KG. Something like B7333pg.chm

You can find the complete list of all BSFN's on KG. Something like B733x.chm