"--version" flag missing from man pages

I noticed that the "--version" flag is not in the man pages for pg_dump, pg_dumpall, initdb, and various other commands. Out of all the files in ./doc/src/sgml/ref/ , I can see only these three which have "--version" listed:

  josh@hades:~/src/postgresql/doc/src/sgml/ref$ grep "\-\-version" *.sgml
  ecpg-ref.sgml:     <term><option>--version</option></term>
  pg_config-ref.sgml:     <term><option>--version</option></>
  psql-ref.sgml:      <term><option>--version</></term>

Yet many other commands support a -V or --version flag which isn't in their man pages.

  $ initdb --version
  initdb (PostgreSQL) 8.5devel

Josh