Product Requirements Document (PRD) template in PMTK

Question: "The PMTK includes a product requirements document. Why is this so if the PRD is not the responsibility of a product manager?"

Answer: The inclusion of a Product Requirements Document (PRD) template in the Blackblot Product Manager's Toolkit® (PMTK) is in order to provide evidence of process continuity and to show the relationship between an Market Requirements Document (MRD) and a Product Requirements Document (PRD).