The entries in this Reference Manual are
   meant to provide in reasonable length an authoritative, complete, and
   formal summary about their respective subjects.  More information
   about the use of PostgreSQL, in
   narrative, tutorial, or example form, may be found in other parts
   of the PostgreSQL documentation set.
   See the cross-references listed on each reference page.
  
   The Reference Manual entries are also
   available as traditional "man" pages.