*** a/doc/src/sgml/func.sgml
--- b/doc/src/sgml/func.sgml
***************
*** 14478,14484 **** SELECT set_config('log_statement_stats', 'off', false);
      The functions shown in <xref
      linkend="functions-admin-backup-table"> assist in making on-line backups.
      These functions cannot be executed during recovery (except
!     <function>pg_xlog_location_diff</function>).
     </para>
  
     <table id="functions-admin-backup-table">
--- 14478,14485 ----
      The functions shown in <xref
      linkend="functions-admin-backup-table"> assist in making on-line backups.
      These functions cannot be executed during recovery (except
!     <function>pg_is_in_backup</function>, <function>pg_backup_start_time</function>
!     and <function>pg_xlog_location_diff</function>).
     </para>
  
     <table id="functions-admin-backup-table">
***************
*** 14537,14543 **** SELECT set_config('log_statement_stats', 'off', false);
          <literal><function>pg_backup_start_time()</function></literal>
          </entry>
         <entry><type>timestamp with time zone</type></entry>
!        <entry>Get start time of an online exclusive backup in progress.</entry>
        </row>
        <row>
         <entry>
--- 14538,14544 ----
          <literal><function>pg_backup_start_time()</function></literal>
          </entry>
         <entry><type>timestamp with time zone</type></entry>
!        <entry>Get start time of an on-line exclusive backup in progress.</entry>
        </row>
        <row>
         <entry>