DOC: documented sql man handling by pg-wrapper

Author: Liudmila Mantrova

doc/src/sgml/ref/pg-wrapper.sgml

@@ -37,12 +37,13 @@
  <para>
   <application>pg-wrapper</application> is a shell script provided in
   the <productname>&productname;</productname> distribution to manage
-  <productname>&productname;</productname> symbolic links on Linux systems.
+  <productname>&productname;</productname> symbolic links and
+  <acronym>SQL</acronym> man pages on Linux systems.
   This script is provided as part of the <filename>postgrespro-std-&majorversion;-client</filename>
   package. Once this package is installed, you can find <application>pg-wrapper</application>
   in the <filename><replaceable>install-dir</replaceable>/bin</filename>
   directory, where <replaceable>install-dir</replaceable> is
-  <filename>/opt/pgpro/std-&majorversion;</filename> by default.
+  <filename>/opt/pgpro/std-&majorversion;</filename>.
  </para>
  <para>
   <application>pg-wrapper</application> must be run as root.
@@ -60,16 +61,23 @@
 
      <varlistentry>
       <term><option>links</option> {<option>update</option> | <option>remove</option>}</term>
-      <listitem><para>Manage <productname>&productname;</productname> symbolic links:
+      <listitem><para>Manage <productname>&productname;</productname>
+      symbolic links and <acronym>SQL</acronym> man pages:
       <itemizedlist spacing="compact">
         <listitem>
           <para>
-          <literal>update</literal> &mdash; create or replace symbolic links.
+          <literal>update</literal> &mdash; create or replace
+          symbolic links for server and client programs provided with
+          <productname>&productname;</productname>, as well as make
+          the provided <acronym>SQL</acronym> man pages available in
+          man page configuration files.
           </para>
         </listitem>
         <listitem>
           <para>
-          <literal>remove</literal> &mdash; remove symbolic links.
+          <literal>remove</literal> &mdash; remove symbolic links
+          and <acronym>SQL</acronym> man page support for the current
+          <productname>&productname;</productname> version.
           </para>
         </listitem>
       </itemizedlist>
@@ -92,11 +100,20 @@
   <para>
     If you are installing individual <productname>&productname;</productname>
     packages, you can run this script manually to create symbolic links
-    to the provided client and server programs.
+    to the provided client and server programs, as well as add
+    <acronym>SQL</acronym> man pages to the man page configuration file.
+    </para>
+    <para>
+      If <acronym>SQL</acronym> man pages are already installed
+      from a different product, the previous installation will keep
+      its priority. For the new <acronym>SQL</acronym> documentation
+      to be displayed first, you have to modify the system configuration,
+      for example, change the <envar>MANPATH</envar> value.
+    </para>
     <important>
      <para>
        If you have been using the same programs provided with
-       other products, running this command may result in a conflict.
+       other products, running <application>pg-wrapper</application> may result in a conflict.
        In this case, you can either continue using the already
        available program version, or adjust the settings manually.
      </para>
@@ -106,7 +123,6 @@
        make these programs available just for a particular user or user session.
      </para>
     </important>
-  </para>
 
   <para>
     For details on binary installation specifics on Linux,