diff --git a/doc/src/sgml/ref/declare.sgml b/doc/src/sgml/ref/declare.sgml
new file mode 100644
index 648c295..34ca9df
*** a/doc/src/sgml/ref/declare.sgml
--- b/doc/src/sgml/ref/declare.sgml
*************** DECLARE <replaceable class="parameter">n
*** 271,277 ****
       and not use grouping or <literal>ORDER BY</literal>).  Cursors
       that are not simply updatable might work, or might not, depending on plan
       choice details; so in the worst case, an application might work in testing
!      and then fail in production.
      </para>
  
      <para>
--- 271,278 ----
       and not use grouping or <literal>ORDER BY</literal>).  Cursors
       that are not simply updatable might work, or might not, depending on plan
       choice details; so in the worst case, an application might work in testing
!      and then fail in production.  If <literal>FOR UPDATE</literal> is
!      specified, the cursor is guaranteed to be updatable.
      </para>
  
      <para>