diff --git a/branches/ucs-3.2/ucs-3.2-1/doc/developer-reference/developer-reference-3.2.xml b/branches/ucs-3.2/ucs-3.2-1/doc/developer-reference/developer-reference-3.2.xml
index 6d1fc74..66991d3 100644
--- a/branches/ucs-3.2/ucs-3.2-1/doc/developer-reference/developer-reference-3.2.xml
+++ b/branches/ucs-3.2/ucs-3.2-1/doc/developer-reference/developer-reference-3.2.xml
@@ -33,8 +33,8 @@
 		</legalnotice>
 		<revhistory>
 			<revision>
-				<revnumber>3.2-0</revnumber>
-				<date>19th of November 2013</date>
+				<revnumber>3.2-1</revnumber>
+				<date>17th of March 2014</date>
 			</revision>
 		</revhistory>
 	</bookinfo>
diff --git a/branches/ucs-3.2/ucs-3.2-1/doc/developer-reference/ucr/ucr.xml b/branches/ucs-3.2/ucs-3.2-1/doc/developer-reference/ucr/ucr.xml
index ed2ac93..8718766 100644
--- a/branches/ucs-3.2/ucs-3.2-1/doc/developer-reference/ucr/ucr.xml
+++ b/branches/ucs-3.2/ucs-3.2-1/doc/developer-reference/ucr/ucr.xml
@@ -203,21 +203,26 @@ if ucr.is_false('repository/online/unmaintained', True):
 			</example>
 			<para>
 				Modifying variables requires a different approach.
-				Two functions <function>handler_set()</function> and <function>handler_unset()</function> can be used to set and unset variables.
+				The function <function>ucr_update()</function> should be used to set and unset variables.
 			</para>
 			<example>
 				<title>Changing &ucsUCRV;s in Python</title>
 				<programlisting><![CDATA[
-from univention.config_registry import handler_set, handler_unset
-handler_set([
-	'foo=bar',
-	'baz=42',
-	])
-handler_unset(['foo', 'bar'])
+from univention.config_registry.handler import ucr_update
+ucr_update(ucr, {
+	'foo': 'bar',
+	'baz': '42',
+	'bar': None,
+	})
 				]]></programlisting>
 			</example>
 			<para>
-				As <function>handler_set()</function> and <function>handler_unset()</function> don't automatically update any instance of <classname>ConfigRegistry</classname>, the <methodname>load()</methodname> method has to be called manually afterwards to reflect the updated values.
+				The function <function>ucr_update()</function> requires an instance of <classname>ConfigRegistry</classname> as its first argument.
+				The method is guaranteed to be atomic and uses file locking internally to prevent race conditions.
+			</para>
+			<para>
+				The second argument must be a Python dictionary mapping <acronym>UCR</acronym> variable names to their new value.
+				The value must be either a string or <constant>None</constant>, which is used to unset the variable.
 			</para>
 		</section>
 	</section>