--- a/master/masking.html	Thu May 17 14:38:28 2012 +1000
+++ b/master/masking.html	Thu May 17 14:42:37 2012 +1000
@@ -835,6 +835,9 @@
   <li><a>'stroke-opacity'</a>, which specifies the opacity of a stroking
   operation;</li>
 
+  <li><a>'solid-opacity'</a>, which specifies the opacity of a solid color
+  paint server;</li>
+
   <li><a>'stop-opacity'</a>, which specifies the opacity of a gradient stop; and</li>
 
   <li><a>'opacity'</a>, which specifies object/group opacity and which is