(a) The Manual will contain appropriate information about the Executive, Legislative, and Judicial branches of the Federal Government, which for the major Executive agencies will include -(1) Descriptions of the agency's legal authorities, public purposes, programs, and functions;(2) Established places and methods whereby the public may obtain information and make submittals or requests; and(3) Lists of officials heading major operating units.(b) The Manual will also contain brief information about quasi-official agencies and supplemental information that, in the opinion of the Director, is of enough public interest to warrant.