This is the FAA/EASA approved document certified for the aircraft’s tail number. It is heavy, legally binding, and not practical for line use. The A320F DOC is effectively the operational extraction of the AFM.
Following the exact SOP (Standard Operating Procedure) found in the FCOM. a320f+doc
Often bundled inside A320F+DOC . While the FCOM tells you what to do, the FCTM tells you how to do it. It offers pedagogical insight into the philosophy of Airbus: This is the FAA/EASA approved document certified for