diff --git a/doc/src/sgml/plpgsql.sgml b/doc/src/sgml/plpgsql.sgml
new file mode 100644
index 48880ce..c100c0e
*** a/doc/src/sgml/plpgsql.sgml
--- b/doc/src/sgml/plpgsql.sgml
*************** GET <optional> CURRENT </optional> DIAGN
*** 1428,1434 ****
       <acronym>SQL</acronym> command.  Note that <varname>RESULT_OID</>
       is only useful after an <command>INSERT</command> command into a
       table containing OIDs.
!      Equals (<literal>:=</>) can be used instead of SQL-standard
       <literal>=</> for <command>GET DIAGNOSTICS</>.
      </para>
  
--- 1428,1434 ----
       <acronym>SQL</acronym> command.  Note that <varname>RESULT_OID</>
       is only useful after an <command>INSERT</command> command into a
       table containing OIDs.
!      Colon-equal (<literal>:=</>) can be used instead of SQL-standard
       <literal>=</> for <command>GET DIAGNOSTICS</>.
      </para>