diff --git a/reference/tidy/functions/tidy-get-html-ver.xml b/reference/tidy/functions/tidy-get-html-ver.xml
index e3259ce9af..bdb95f3492 100644
--- a/reference/tidy/functions/tidy-get-html-ver.xml
+++ b/reference/tidy/functions/tidy-get-html-ver.xml
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='iso-8859-1'?>
-<!-- $Revision: 1.2 $ -->
+<!-- $Revision: 1.3 $ -->
   <refentry id="function.tidy-get-html-ver">
    <refnamediv>
     <refname>tidy_get_html_ver</refname>
@@ -13,9 +13,16 @@
      <type>int</type><methodname>tidy_get_html_ver</methodname>
      <methodparam><type>resource</type><parameter>tidy</parameter></methodparam>
     </methodsynopsis>
-
-     &warn.undocumented.func;
-
+    <para>
+     <function>tidy_get_html_ver</function> returns the detected HTML version
+     for the specified <parameter>tidy</parameter> resource.
+    </para>
+    <warning>
+     <para>
+      This function is not yet implemented in the Tidylib itself, so it always
+      return <literal>0</literal>.
+     </para>
+    </warning>
    </refsect1>
   </refentry>