--- loncom/homework/inputtags.pm	2008/03/03 11:22:54	1.239
+++ loncom/homework/inputtags.pm	2008/03/03 19:37:27	1.240
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # input  definitons
 #
-# $Id: inputtags.pm,v 1.239 2008/03/03 11:22:54 bisitz Exp $
+# $Id: inputtags.pm,v 1.240 2008/03/03 19:37:27 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -788,7 +788,8 @@ sub decideoutput {
 	$css_class=$possible_class{'not_charged_try'};
 	$button=1;
     } elsif ($award eq 'BAD_FORMULA') {
-	$message = &mt("Unable to understand formula");
+	$message = &mt("Unable to understand formula").'.';
+        if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Formula_Answers')};
 	$css_class=$possible_class{'not_charged_try'};
 	$button=1;
     } elsif ($award eq 'INCORRECT') {