diff --git a/doc/sideways.txt b/doc/sideways.txt
index e543197..a58d3b1 100644
--- a/doc/sideways.txt
+++ b/doc/sideways.txt
@@ -115,9 +115,11 @@ HTML attributes:
 >
     <input name="one" id="two" class="three" />
 <
-Contents of HTML `class` and `style` values:
+Contents of HTML `class` and `style` values, and ERuby `class:` strings:
 >
     <div class="one two three" style="width: 100px; height: 50px;"></div>
+
+    <%= link_to 'Something', 'URL', class: 'one two three' %>
 <
 Handlebars components:
 >