title: pg_dump compression format
body: <p>pg_dump <code>compress</code> option has the following <a href="http://www.postgresql.org/docs/9.2/static/app-pgdump.html" rel="nofollow">description</a>:</p>
  
  <blockquote>
    <p>Specify the compression level to use. Zero means no compression. For the custom archive format, this specifies compression of individual table-data segments, and the default is to compress at a moderate level. For plain text output, setting a nonzero compression level causes the entire output file to be compressed, as though it had been fed through gzip; but the default is not to compress. The tar archive format currently does not support compression at all.</p>
  </blockquote>
  
  <p>Does it mean that the archive will have gzip format?</p>