--- loncom/homework/edit.pm	2012/02/13 11:23:11	1.140
+++ loncom/homework/edit.pm	2012/02/28 22:42:31	1.141
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # edit mode helpers
 #
-# $Id: edit.pm,v 1.140 2012/02/13 11:23:11 foxr Exp $
+# $Id: edit.pm,v 1.141 2012/02/28 22:42:31 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -427,6 +427,12 @@ sub insert_plotvector {
 <plotvector />';
 }
 
+sub insert_drawvectorsum {
+    return '
+<drawvectorsum />';
+}
+
+
 sub insert_functionplotrule {
     return '
 <functionplotrule />';