added $lowercase parameter to url_title() to allow forced lowercase
diff --git a/user_guide/helpers/url_helper.html b/user_guide/helpers/url_helper.html
index 53fde2c..8bdf59a 100644
--- a/user_guide/helpers/url_helper.html
+++ b/user_guide/helpers/url_helper.html
@@ -223,9 +223,17 @@
<br />
$url_title = url_title($title, 'underscore');<br />
<br />
-// Produces: whats_wrong_with_css
+// Produces: Whats_wrong_with_CSS
</code>
+<p>The third parameter determines whether or not lowercase characters are forced. By default they are not. Options are boolean <dfn>TRUE</dfn>/<dfn>FALSE</dfn>:</p>
+
+<code>$title = "What's wrong with CSS?";<br />
+<br />
+$url_title = url_title($title, 'underscore', TRUE);<br />
+<br />
+// Produces: whats_wrong_with_css
+</code>
<h3>prep_url()</h3>
<p>This function will add <kbd>http://</kbd> in the event it is missing from a URL. Pass the URL string to the function like this:</p>