--- loncom/homework/insertlist.xml	2011/12/02 16:33:58	1.30
+++ loncom/homework/insertlist.xml	2012/02/28 22:42:31	1.31
@@ -65,6 +65,12 @@
                 </help>
 
         </tag>
+        <tag name="drawvectorsum">
+                <description>Draw Vector Sum</description>
+                <color>#88aa99</color>
+                <insert_sub>insert_drawvectorsum</insert_sub>
+                <allow></allow>
+        </tag>
         <tag name="functionplotruleset">
                 <description>Function Plot Rule Set</description>
                 <color>#99ff88</color>
@@ -75,7 +81,7 @@
                 <description>Function Plot Elements</description>
                 <color>#99ff88</color>
                 <insert_sub>insert_functionplotelements</insert_sub>
-                <allow>spline,backgroundplot,plotobject,plotvector</allow>
+                <allow>spline,backgroundplot,plotobject,plotvector,drawvectorsum</allow>
         </tag>
 
         <tag name="functionplotrule">