--- a/src/include/terms.html	Tue May 27 15:45:44 2014 -0400
+++ b/src/include/terms.html	Tue May 27 14:56:12 2014 -0700
@@ -10,6 +10,11 @@
 	<dd>
 		<p class="placeholder">TBD</p>
 	</dd>
+
+	<dt id="def_default_behavior">Default Behavior</dt>
+	<dd>
+		<p class="placeholder">TBD</p>
+	</dd>
 	
 	<dt id="def_marked_element">Marked Element(s)</dt>
 	<dd>