Document the family() function (added during the 7.4 dev cycle but not

documented), and fix a typo.

doc/src/sgml/func.sgml

 <!--
-$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.186 2004/02/05 22:54:36 joe Exp $
+$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.187 2004/02/22 04:14:06 neilc Exp $
 PostgreSQL documentation
 -->
 
@@ -6096,6 +6096,13 @@ SELECT TIMESTAMP 'now';
 	<entry><literal>abbrev(cidr '10.1.0.0/16')</literal></entry>
 	<entry><literal>10.1/16</literal></entry>
        </row>
+       <row>
+    <entry><literal><function>family</function>(<type>inet</type>)</literal></entry>
+    <entry><type>integer</type></entry>
+    <entry>extract family of address; <literal>4</literal> for IPv4,
+    <literal>6</literal> for IPv6</entry>
+    <entry><literal>family('::1')</literal></entry>
+    <entry><literal>6</literal></entry>
       </tbody>
      </tgroup>
     </table>