--- a/master/intro.html	Mon Nov 21 14:33:26 2011 +0100
+++ b/master/intro.html	Mon Nov 21 14:34:20 2011 +0100
@@ -408,6 +408,17 @@
             class="element-name">'defs'</span> element</a>.
       </dd>
 
+      <dt id="TermLacunaValue"><span
+        class="SVG-TermDefine">lacuna value</span></dt>
+      <dd>
+	<p class="issue">
+	  Provide an appropriate definition. This legalese sounding
+	  term comes from SVG 1.2 Tiny. A search for "lacuna value"
+	  results in the SVG 1.2 Tiny and the proto-SVG 2.0 specs (of
+	  February 2010).
+	</p>
+      </dd>
+
       <dt id="TermLightSourceElement"><span class="SVG-TermDefine">light source element</span></dt>
       <dd>A light source element is one that can specify light source
       information for an <a>'feDiffuseLighting'</a> or <a>'feSpecularLighting'</a>