Add doc links from SET to SET_CONSTRAINTS, SET_SESSION_AUTH,

SET_TRANSACTION.

doc/src/sgml/ref/set.sgml

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-$Header: /cvsroot/pgsql/doc/src/sgml/ref/set.sgml,v 1.68 2002/10/13 16:55:05 tgl Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/ref/set.sgml,v 1.69 2003/01/11 00:39:52 momjian Exp $
 PostgreSQL documentation
 -->
 
@@ -509,6 +509,12 @@ SELECT CURRENT_TIMESTAMP AS today;
  <refsect1>
   <title>See Also</title>
 
+  <simpara>
+   <xref linkend="sql-set_constraints" endterm="sql-set_constraints">,
+   <xref linkend="sql-set_session_auth" endterm="sql-set-session_auth">,
+   <xref linkend="sql-set_transaction" endterm="sql-set_transaction">
+  </simpara>
+
   <para>
     The function <function>set_config</function> provides the equivalent
     capability. See <citetitle>Miscellaneous Functions</citetitle> in the