--- loncom/homework/edit.pm	2011/11/24 13:28:01	1.139
+++ 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 1.139 2011/11/24 13:28:01 www 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 />';
@@ -952,13 +958,16 @@ sub checked_arg {
 }
 
 sub text_arg {
-    my ($description,$name,$token,$size) = @_;
+    my ($description,$name,$token,$size, $class) = @_;
     my $result;
     if (!defined $size) { $size=20; }
     my $arg=$token->[2]{$name};
     $result=&mt($description).'&nbsp;<input name="'.&html_element_name($name).
-	'" type="text" value="'.$arg.'" size="'.$size.'" '.
-	&element_change_detection().'/>';
+	'" type="text" value="'.$arg.'" size="'.$size.'" ';
+    if (defined $class) {
+	$result .= 'class="' . $class . '" ';
+    }
+    $result .=	&element_change_detection().'/>';
     return '<span class="LC_nobreak">'.$result.'</span>';
 }