diff --git a/functions/pgsql.xml b/functions/pgsql.xml
index 02e8d48f01..c3b599bfc2 100644
--- a/functions/pgsql.xml
+++ b/functions/pgsql.xml
@@ -111,6 +111,15 @@
      otherwise.  Closes down the connection to a PostgreSQL database
      associated with the given connection index.
     </para>
+    <note><para> 
+     This isn't usually necessary, as non-persistent open
+     links are automatically closed at the end of the script's
+     execution.
+    </para></note>
+    <para> 
+     <function>pg_close</function> will not close persistent links
+     generated by <function>pg_pconnect</function>.
+    </para>	 
    </refsect1>
   </refentry>