Complete merge of all old man page information.

ecpg reference page still needs formatting.

doc/src/sgml/ref/drop_aggregate.sgml

@@ -1,6 +1,11 @@
+<!--
+$Header: /cvsroot/pgsql/doc/src/sgml/ref/drop_aggregate.sgml,v 1.6 1999/07/22 15:09:10 thomas Exp $
+Postgres documentation
+-->
+
 <refentry id="SQL-DROPAGGREGATE">
  <refmeta>
-  <refentrytitle>
+  <refentrytitle id="SQL-DROPAGGREGATE-TITLE">
    DROP AGGREGATE
   </refentrytitle>
   <refmiscinfo>SQL - Language Statements</refmiscinfo>
@@ -15,7 +20,7 @@
  </refnamediv>
  <refsynopsisdiv>
   <refsynopsisdivinfo>
-   <date>1998-04-15</date>
+   <date>1999-07-20</date>
   </refsynopsisdivinfo>
   <synopsis>
 DROP AGGREGATE <replaceable class="PARAMETER">name</replaceable> <replaceable class="PARAMETER">type</replaceable>
@@ -109,14 +114,11 @@ WARN RemoveAggregate: aggregate '<replaceable class="parameter">agg</replaceable
    <title>
     Notes
    </title>
+
    <para>
-    The <command>DROP AGGREGATE</command> statement is a
-    <productname>Postgres</productname>
-    language extension.
-   </para>
-   <para>
-    Refer to the <command>CREATE AGGREGATE</command> statement to
-    create aggregate functions.
+    Use
+    <xref linkend="sql-createaggregate-title" endterm="sql-createaggregate-title">
+    to create aggregate functions.
    </para>
   </refsect2>
  </refsect1>
@@ -138,8 +140,6 @@ DROP AGGREGATE myavg int4;
   <title>
    Compatibility
   </title>
-  <para>
-  </para>
 
   <refsect2 id="R2-SQL-DROPAGGREGATE-4">
    <refsect2info>
@@ -148,8 +148,12 @@ DROP AGGREGATE myavg int4;
    <title>
     SQL92
    </title>
+
    <para>
-    There is no DROP AGGREGATE statement in <acronym>SQL92</acronym>.
+    There is no <command>DROP AGGREGATE</command> statement
+    in <acronym>SQL92</acronym>; the statement is a
+    <productname>Postgres</productname>
+    language extension.
    </para>
   </refsect2>
  </refsect1>