*** a/doc/src/sgml/func.sgml
--- b/doc/src/sgml/func.sgml
***************
*** 19835,19840 **** SELECT set_config('log_statement_stats', 'off', false);
--- 19835,19842 ----
      The functions shown in <xref
      linkend="functions-admin-backup-table"/> assist in making on-line backups.
      These functions cannot be executed during recovery (except
+     non-exclusive <function>pg_start_backup</function>,
+     non-exclusive <function>pg_stop_backup</function>,
      <function>pg_is_in_backup</function>, <function>pg_backup_start_time</function>
      and <function>pg_wal_lsn_diff</function>).
     </para>