Document --describe-config.

diff --git a/doc/src/sgml/ref/postgres-ref.sgml b/doc/src/sgml/ref/postgres-ref.sgml
index c36505af361cd59b7f46ffb300d08810fe515352..6b5381690b2f307c05316878b6068b6f7c777b17 100644 (file)
--- a/doc/src/sgml/ref/postgres-ref.sgml
+++ b/doc/src/sgml/ref/postgres-ref.sgml
@@ -335,6 +335,17 @@ PostgreSQL documentation
       </listitem>
      </varlistentry>
 
+     <varlistentry>
+      <term><option>--describe-config</option></term>
+      <listitem>
+       <para>
+        This option dumps out the server's internal configuration variables, 
+        descriptions, and defaults in tab-delimited <command>COPY</> format.
+        It is designed primarily for use by administration tools.
+       </para>
+      </listitem>
+     </varlistentry>
+
     </variablelist>
    </refsect2>
  </refsect1>