diff --git a/doc/src/sgml/ref/psql-ref.sgml b/doc/src/sgml/ref/psql-ref.sgml
new file mode 100644
index 5dce06a..85899d7
*** a/doc/src/sgml/ref/psql-ref.sgml
--- b/doc/src/sgml/ref/psql-ref.sgml
*************** testdb=>
*** 679,684 ****
--- 679,690 ----
      <xref linkend="SQL-LISTEN"> and
      <xref linkend="SQL-NOTIFY">.
      </para>
+ 
+     <para>
+     While C-style block comments are passed to the server for
+     processing and removal, SQL-standard comments are removed by
+     <application>psql</application>.
+     </para>
    </refsect2>
  
    <refsect2 id="APP-PSQL-meta-commands">