Fix markup for terminology.

doc/src/sgml/ref/lock.sgml

 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/ref/lock.sgml,v 1.19 2000/03/24 03:57:06 momjian Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/ref/lock.sgml,v 1.20 2000/03/28 14:35:27 thomas Exp $
 Postgres documentation
 -->
 
@@ -224,10 +224,18 @@ ERROR <replaceable class="PARAMETER">name</replaceable>: Table does not exist.
   <title>
    Description
   </title>
-   <title>
-    Terms
-   </title>
+
+  <para>
+   <command>LOCK TABLE</command> controls concurrent access to a table
+   for the duration of a transaction.
+   <productname>Postgres</productname> always uses the least restrictive
+   lock mode whenever possible. <command>LOCK TABLE</command> 
+   provided for cases when you might need more restrictive locking.
+  </para>
+
   <para>
+   <acronym>RDBMS</acronym> locking uses the following terminology:
+
    <variablelist>
     <varlistentry>
      <term>EXCLUSIVE</term>
@@ -237,9 +245,7 @@ ERROR <replaceable class="PARAMETER">name</replaceable>: Table does not exist.
       </para>
      </listitem>
     </varlistentry>
-    </variablelist>
 
-    <variablelist>
     <varlistentry>
      <term>SHARE</term>
      <listitem>
@@ -248,9 +254,7 @@ ERROR <replaceable class="PARAMETER">name</replaceable>: Table does not exist.
       </para>
      </listitem>
     </varlistentry>
-    </variablelist>
 
-    <variablelist>
     <varlistentry>
      <term>ACCESS</term>
      <listitem>
@@ -259,9 +263,7 @@ ERROR <replaceable class="PARAMETER">name</replaceable>: Table does not exist.
       </para>
      </listitem>
     </varlistentry>
-    </variablelist>
 
-    <variablelist>
     <varlistentry>
      <term>ROW</term>
      <listitem>
@@ -272,24 +274,12 @@ ERROR <replaceable class="PARAMETER">name</replaceable>: Table does not exist.
     </varlistentry>
    </variablelist>
 
-    <variablelist>
-     <varlistentry>
-      <term>Notes</term>
-      <listitem>
+   <note>
     <para>
      If EXCLUSIVE or SHARE are not specified, EXCLUSIVE is assumed.
      Locks exist for the duration of the transaction.
     </para>
-      </listitem>
-     </varlistentry>
-    </variablelist>
-
-   </para>
-
-  <para>
-   <productname>Postgres</productname> always uses the least restrictive
-   lock mode whenever possible. <command>LOCK TABLE</command> 
-   provided for cases when you might need more restrictive locking.
+   </note>
   </para>
 
   <para>