--- loncom/homework/grades.pm	2007/11/13 01:14:32	1.488
+++ loncom/homework/grades.pm	2008/11/11 16:40:47	1.529
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Grading handler
 #
-# $Id: grades.pm,v 1.488 2007/11/13 01:14:32 albertel Exp $
+# $Id: grades.pm,v 1.529 2008/11/11 16:40:47 jms Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -26,6 +26,183 @@
 # http://www.lon-capa.org/
 #
 
+=head1 NAME
+
+Apache::grades
+
+=head1 SYNOPSIS
+
+Handles the viewing of grades.
+
+This is part of the LearningOnline Network with CAPA project
+described at http://www.lon-capa.org.
+
+=head1 OVERVIEW
+
+Do an ssi with retries:
+While I'd love to factor out this with the vesrion in lonprintout,
+that would either require a data coupling between modules, which I refuse to perpetuate (there's quite enough of that already), or would require the invention of another infrastructure
+I'm not quite ready to invent (e.g. an ssi_with_retry object).
+
+At least the logic that drives this has been pulled out into loncommon.
+
+
+
+ssi_with_retries - Does the server side include of a resource.
+                     if the ssi call returns an error we'll retry it up to
+                     the number of times requested by the caller.
+                     If we still have a proble, no text is appended to the
+                     output and we set some global variables.
+                     to indicate to the caller an SSI error occurred.  
+                     All of this is supposed to deal with the issues described
+                     in LonCAPA BZ 5631 see:
+                     http://bugs.lon-capa.org/show_bug.cgi?id=5631
+                     by informing the user that this happened.
+
+Parameters:
+  resource   - The resource to include.  This is passed directly, without
+               interpretation to lonnet::ssi.
+  form       - The form hash parameters that guide the interpretation of the resource
+               
+  retries    - Number of retries allowed before giving up completely.
+Returns:
+  On success, returns the rendered resource identified by the resource parameter.
+Side Effects:
+  The following global variables can be set:
+   ssi_error                - If an unrecoverable error occurred this becomes true.
+                              It is up to the caller to initialize this to false
+                              if desired.
+   ssi_error_resource  - If an unrecoverable error occurred, this is the value
+                              of the resource that could not be rendered by the ssi
+                              call.
+   ssi_error_message   - The error string fetched from the ssi response
+                              in the event of an error.
+
+
+=head1 HANDLER SUBROUTINE
+
+ssi_with_retries()
+
+=head1 OTHER SUBROUTINES
+
+=over
+
+=item *
+
+
+scantron_get_correction() : 
+
+   Builds the interface screen to interact with the operator to fix a
+   specific error condition in a specific scanline
+
+ Arguments:
+    $r           - Apache request object
+    $i           - number of the current scanline
+    $scan_record - hash ref as returned from &scantron_parse_scanline()
+    $scan_config - hash ref as returned from &get_scantron_config()
+    $line        - full contents of the current scanline
+    $error       - error condition, valid values are
+                   'incorrectCODE', 'duplicateCODE',
+                   'doublebubble', 'missingbubble',
+                   'duplicateID', 'incorrectID'
+    $arg         - extra information needed
+       For errors:
+         - duplicateID   - paper number that this studentID was seen before on
+         - duplicateCODE - array ref of the paper numbers this CODE was
+                           seen on before
+         - incorrectCODE - current incorrect CODE 
+         - doublebubble  - array ref of the bubble lines that have double
+                           bubble errors
+         - missingbubble - array ref of the bubble lines that have missing
+                           bubble errors
+
+=item *
+
+scantron_get_maxbubble() : 
+
+   Returns the maximum number of bubble lines that are expected to
+   occur. Does this by walking the selected sequence rendering the
+   resource and then checking &Apache::lonxml::get_problem_counter()
+   for what the current value of the problem counter is.
+
+   Caches the results to $env{'form.scantron_maxbubble'},
+   $env{'form.scantron.bubble_lines.n'}, 
+   $env{'form.scantron.first_bubble_line.n'} and
+   $env{"form.scantron.sub_bubblelines.n"}
+   which are the total number of bubble, lines, the number of bubble
+   lines for response n and number of the first bubble line for response n,
+   and a comma separated list of numbers of bubble lines for sub-questions
+   (for optionresponse, matchresponse, and rankresponse items), for response n.  
+
+
+=item *
+
+scantron_validate_missingbubbles() : 
+
+   Validates all scanlines in the selected file to not have any
+    answers that don't have bubbles that have not been verified
+    to be bubble free.
+
+=item *
+
+scantron_process_students() : 
+
+   Routine that does the actual grading of the bubble sheet information.
+
+   The parsed scanline hash is added to %env 
+
+   Then foreach unskipped scanline it does an &Apache::lonnet::ssi()
+   foreach resource , with the form data of
+
+	'submitted'     =>'scantron' 
+	'grade_target'  =>'grade',
+	'grade_username'=> username of student
+	'grade_domain'  => domain of student
+	'grade_courseid'=> of course
+	'grade_symb'    => symb of resource to grade
+
+    This triggers a grading pass. The problem grading code takes care
+    of converting the bubbled letter information (now in %env) into a
+    valid submission.
+
+=item *
+
+scantron_upload_scantron_data() :
+
+    Creates the screen for adding a new bubble sheet data file to a course.
+
+=item *
+
+scantron_upload_scantron_data_save() : 
+
+   Adds a provided bubble information data file to the course if user
+   has the correct privileges to do so. 
+
+=item *
+
+valid_file() :
+
+   Validates that the requested bubble data file exists in the course.
+
+=item *
+
+scantron_download_scantron_data() : 
+
+   Shows a list of the three internal files (original, corrected,
+   skipped) for a specific bubble sheet data file that exists in the
+   course.
+
+=item *
+
+scantron_validate_ID() : 
+
+   Validates all scanlines in the selected file to not have any
+   invalid or underspecified student IDs
+
+=back
+
+=cut
+
 package Apache::grades;
 use strict;
 use Apache::style;
@@ -47,88 +224,49 @@ use LONCAPA;
 use POSIX qw(floor);
 
 
-my %perm=();
-my %bubble_lines_per_response = ();     # no. bubble lines for each response.
-                                   # index is "symb.part_id"
-
-my %first_bubble_line = ();	# First bubble line no. for each bubble.
-
-# Save and restore the bubble lines array to the form env.
-
-
-sub save_bubble_lines {
-    foreach my $line (keys(%bubble_lines_per_response)) {
-	$env{"form.scantron.bubblelines.$line"}  = $bubble_lines_per_response{$line};
-	$env{"form.scantron.first_bubble_line.$line"} =
-	    $first_bubble_line{$line};
-    }
-}
-
-
-sub restore_bubble_lines {
-    my $line = 0;
-    %bubble_lines_per_response = ();
-    while ($env{"form.scantron.bubblelines.$line"}) {
-	my $value = $env{"form.scantron.bubblelines.$line"};
-	$bubble_lines_per_response{$line} = $value;
-	$first_bubble_line{$line}  =
-	    $env{"form.scantron.first_bubble_line.$line"};
-	$line++;
-    }
-
-}
 
-#  Given the parsed scanline, get the response for 
-#  'answer' number n:
+my %perm=();
 
-sub get_response_bubbles {
-    my ($parsed_line, $response)  = @_;
+#  These variables are used to recover from ssi errors
 
+my $ssi_retries = 5;
+my $ssi_error;
+my $ssi_error_resource;
+my $ssi_error_message;
 
-    my $bubble_line = $first_bubble_line{$response-1} +1;
-    my $bubble_lines= $bubble_lines_per_response{$response-1};
-    
-    my $selected = "";
 
-    for (my $bline = 0; $bline < $bubble_lines; $bline++) {
-	$selected .= $$parsed_line{"scantron.$bubble_line.answer"}.":";
-	$bubble_line++;
+sub ssi_with_retries {
+    my ($resource, $retries, %form) = @_;
+    my ($content, $response) = &Apache::loncommon::ssi_with_retries($resource, $retries, %form);
+    if ($response->is_error) {
+	$ssi_error          = 1;
+	$ssi_error_resource = $resource;
+	$ssi_error_message  = $response->code . " " . $response->message;
     }
-    return $selected;
-}
 
+    return $content;
 
-# ----- These first few routines are general use routines.----
-
-# Return the number of occurences of a pattern in a string.
-
-sub occurence_count {
-    my ($string, $pattern) = @_;
-
-    my @matches = ($string =~ /$pattern/g);
-
-    return scalar(@matches);
 }
+#
+#  Prodcuces an ssi retry failure error message to the user:
+#
 
-
-# Take a string known to have digits and convert all the
-# digits into letters in the range J,A..I.
-
-sub digits_to_letters {
-    my ($input) = @_;
-
-    my @alphabet = ('J', 'A'..'I');
-
-    my @input    = split(//, $input);
-    my $output ='';
-    for (my $i = 0; $i < scalar(@input); $i++) {
-	if ($input[$i] =~ /\d/) {
-	    $output .= $alphabet[$input[$i]];
-	} else {
-	    $output .= $input[$i];
-	}
-    }
-    return $output;
+sub ssi_print_error {
+    my ($r) = @_;
+    my $helpurl = &Apache::loncommon::top_nav_help('Helpdesk');
+    $r->print('
+<br />
+<h2>'.&mt('An unrecoverable network error occurred:').'</h2>
+<p>
+'.&mt('Unable to retrieve a resource from a server:').'<br />
+'.&mt('Resource:').' '.$ssi_error_resource.'<br />
+'.&mt('Error:').' '.$ssi_error_message.'
+</p>
+<p>'.
+&mt('It is recommended that you try again later, as this error may mean the server was just temporarily unavailable, or is down for maintenance.').'<br />'.
+&mt('If the error persists, please contact the [_1] for assistance.',$helpurl).
+'</p>');
+    return;
 }
 
 #
@@ -239,8 +377,8 @@ sub showResourceInfo {
     my %resptype = ();
     my $hdgrade='no';
     my %partsseen;
-    foreach my $partID (sort keys(%$responseType)) {
-	foreach my $resID (sort keys(%{ $responseType->{$partID} })) {
+    foreach my $partID (sort(keys(%$responseType))) {
+	foreach my $resID (sort(keys(%{ $responseType->{$partID} }))) {
 	    my $handgrade=$$handgrade{$partID.'_'.$resID};
 	    my $responsetype = $responseType->{$partID}->{$resID};
 	    $hdgrade = $handgrade if ($handgrade eq 'yes');
@@ -277,27 +415,28 @@ sub reset_caches {
     }
 
     sub get_analyze {
-	my ($symb,$uname,$udom)=@_;
+	my ($symb,$uname,$udom,$no_increment)=@_;
 	my $key = "$symb\0$uname\0$udom";
 	return $analyze_cache{$key} if (exists($analyze_cache{$key}));
 
 	my (undef,undef,$url)=&Apache::lonnet::decode_symb($symb);
 	$url=&Apache::lonnet::clutter($url);
-	my $subresult=&Apache::lonnet::ssi($url,
-					   ('grade_target' => 'analyze'),
-					   ('grade_domain' => $udom),
-					   ('grade_symb' => $symb),
-					   ('grade_courseid' => 
-					    $env{'request.course.id'}),
-					   ('grade_username' => $uname));
+	my $subresult=&ssi_with_retries($url, $ssi_retries,
+					   ('grade_target' => 'analyze',
+					    'grade_domain' => $udom,
+					    'grade_symb' => $symb,
+					    'grade_courseid' => 
+					    $env{'request.course.id'},
+					    'grade_username' => $uname,
+                                            'grade_noincrement' => $no_increment));
 	(undef,$subresult)=split(/_HASH_REF__/,$subresult,2);
 	my %analyze=&Apache::lonnet::str2hash($subresult);
 	return $analyze_cache{$key} = \%analyze;
     }
 
     sub get_order {
-	my ($partid,$respid,$symb,$uname,$udom)=@_;
-	my $analyze = &get_analyze($symb,$uname,$udom);
+	my ($partid,$respid,$symb,$uname,$udom,$no_increment)=@_;
+	my $analyze = &get_analyze($symb,$uname,$udom,$no_increment);
 	return $analyze->{"$partid.$respid.shown"};
     }
 
@@ -1029,7 +1168,7 @@ LISTJAVASCRIPT
 	       '&nbsp;'.$section.($group ne '' ?'/'.$group:'').'</td>'."\n";
 
 	    if ($env{'form.showgrading'} eq 'yes' && $submitonly ne 'all') {
-		foreach (sort keys(%status)) {
+		foreach (sort(keys(%status))) {
 		    next if ($_ =~ /^resource.*?submitted_by$/);
 		    $gradeTable.='<td align="center">&nbsp;'.&mt($status{$_}).'&nbsp;</td>'."\n";
 		}
@@ -1841,9 +1980,9 @@ sub download_all_link {
 	join("\n",&Apache::loncommon::get_env_multiple('form.vPart'));
 
     my $identifier = &Apache::loncommon::get_cgi_id();
-    &Apache::lonnet::appenv('cgi.'.$identifier.'.students' => $all_students,
-                            'cgi.'.$identifier.'.symb' => $symb,
-                            'cgi.'.$identifier.'.parts' => $parts,);
+    &Apache::lonnet::appenv({'cgi.'.$identifier.'.students' => $all_students,
+                             'cgi.'.$identifier.'.symb' => $symb,
+                             'cgi.'.$identifier.'.parts' => $parts,});
     $r->print('<a href="/cgi-bin/multidownload.pl?'.$identifier.'">'.
 	      &mt('Download All Submitted Documents').'</a>');
     return
@@ -2224,8 +2363,8 @@ KEYWORDS
 	$seen{$partid}++;
 	next if ($$handgrade{$part_resp} ne 'yes' 
 		 && $env{'form.lastSub'} eq 'hdgrade');
-	push @partlist,$partid;
-	push @gradePartRespid,$partid.'.'.$respid;
+	push(@partlist,$partid);
+	push(@gradePartRespid,$partid.'.'.$respid);
 	$request->print(&gradeBox($request,$symb,$uname,$udom,$counter,$partid,\%record));
     }
     $request->print('</div></div>');
@@ -2552,7 +2691,7 @@ sub processHandGrade {
 
     my (@parsedlist,@nextlist);
     my ($nextflg) = 0;
-    foreach (sort 
+    foreach my $item (sort 
 	     {
 		 if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
 		     return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
@@ -2560,12 +2699,12 @@ sub processHandGrade {
 		 return $a cmp $b;
 	     } (keys(%$fullname))) {
 	if ($nextflg == 1 && $button =~ /Next$/) {
-	    push @parsedlist,$_;
+	    push(@parsedlist,$item);
 	}
-	$nextflg = 1 if ($_ eq $laststu);
+	$nextflg = 1 if ($item eq $laststu);
 	if ($button eq 'Previous') {
-	    last if ($_ eq $firststu);
-	    push @parsedlist,$_;
+	    last if ($item eq $firststu);
+	    push(@parsedlist,$item);
 	}
     }
     $ctr = 0;
@@ -2588,11 +2727,11 @@ sub processHandGrade {
 	    my $submitted = 0;
 	    my $ungraded = 0;
 	    my $incorrect = 0;
-	    foreach (keys(%status)) {
-		$submitted = 1 if ($status{$_} ne 'nothing');
-		$ungraded = 1 if ($status{$_} =~ /^ungraded/);
-		$incorrect = 1 if ($status{$_} =~ /^incorrect/);
-		my ($foo,$partid,$foo1) = split(/\./,$_);
+	    foreach my $item (keys(%status)) {
+		$submitted = 1 if ($status{$item} ne 'nothing');
+		$ungraded = 1 if ($status{$item} =~ /^ungraded/);
+		$incorrect = 1 if ($status{$item} =~ /^incorrect/);
+		my ($foo,$partid,$foo1) = split(/\./,$item);
 		if ($status{'resource.'.$partid.'.submitted_by'} ne '') {
 		    $submitted = 0;
 		}
@@ -2603,7 +2742,7 @@ sub processHandGrade {
 	    next if (!$ungraded && ($submitonly eq 'graded'));
 	    next if (!$incorrect && $submitonly eq 'incorrect');
 	}
-	push @nextlist,$student if ($ctr < $ntstu);
+	push(@nextlist,$student) if ($ctr < $ntstu);
 	last if ($ctr == $ntstu);
 	$ctr++;
     }
@@ -2611,7 +2750,7 @@ sub processHandGrade {
     $ctr = 0;
     my $total = scalar(@nextlist)-1;
 
-    foreach (sort @nextlist) {
+    foreach (sort(@nextlist)) {
 	my ($uname,$udom,$submitter) = split(/:/);
 	$env{'form.student'}  = $uname;
 	$env{'form.userdom'}  = $udom;
@@ -2657,7 +2796,7 @@ sub saveHandGrade {
 	    }
 	} elsif ($dropMenu eq 'reset status'
 		 && exists($record{'resource.'.$new_part.'.solved'})) { #don't bother if no old records -> no attempts
-	    foreach my $key (keys (%record)) {
+	    foreach my $key (keys(%record)) {
 		if ($key=~/^resource\.\Q$new_part\E\./) { $newrecord{$key} = ''; }
 	    }
 	    $newrecord{'resource.'.$new_part.'.regrader'}=
@@ -2692,7 +2831,7 @@ sub saveHandGrade {
                 &handback_files($request,$symb,$stuname,$domain,$newflg,$new_part,\%newrecord);
 		next;
 	    } else {
-	        push @parts_graded, $new_part;
+	        push(@parts_graded,$new_part);
 	    }
 	    if ($record{'resource.'.$new_part.'.awarded'} ne $partial) {
 		$newrecord{'resource.'.$new_part.'.awarded'}  = $partial;
@@ -2719,7 +2858,7 @@ sub saveHandGrade {
 	        $record{'resource.'.$new_part.'.solved'} eq 'incorrect_by_override' ||
 	        $dropMenu eq 'reset status')
 	   {
-	    push (@version_parts,$new_part);
+	    push(@version_parts,$new_part);
 	}
     }
     my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
@@ -2767,7 +2906,7 @@ sub check_and_remove_from_queue {
 
 sub handback_files {
     my ($request,$symb,$stuname,$domain,$newflg,$new_part,$newrecord) = @_;
-    my $portfolio_root = &propath($domain,$stuname).'/userfiles/portfolio';
+    my $portfolio_root = '/userfiles/portfolio';
     my ($partlist,$handgrade,$responseType) = &response_type($symb);
 
     my @part_response_id = &flatten_responseType($responseType);
@@ -2785,7 +2924,8 @@ sub handback_files {
                     my ($answer_name,$answer_ver,$answer_ext) =
 		        &file_name_version_ext($answer_file);
 		    my ($portfolio_path) = ($directory =~ /^.+$stuname\/portfolio(.*)/);
-		    my @dir_list = &Apache::lonnet::dirlist($portfolio_path,$domain,$stuname,$portfolio_root);
+                    my $getpropath = 1;
+		    my @dir_list = &Apache::lonnet::dirlist($portfolio_root.$portfolio_path,$domain,$stuname,$getpropath);
 		    my $version = &get_next_version($answer_name, $answer_ext, \@dir_list);
                     # fix file name
                     my ($save_file_name) = (($directory.$answer_name.".$version.".$answer_ext) =~ /^.+\/${stuname}\/(.*)/);
@@ -2891,7 +3031,7 @@ sub decrement_aggs {
     if ($aggtries == $totaltries) {
         $decrement{'users'} = 1;
     }
-    foreach my $type (keys (%decrement)) {
+    foreach my $type (keys(%decrement)) {
         $$aggregate{$symb."\0".$part."\0".$type} = -$decrement{$type};
     }
     return;
@@ -2921,8 +3061,7 @@ sub version_portfiles {
     my $version_parts = join('|',@$v_flag);
     my @returned_keys;
     my $parts = join('|', @$parts_graded);
-    my $portfolio_root = &propath($domain,$stu_name).
-	'/userfiles/portfolio';
+    my $portfolio_root = '/userfiles/portfolio';
     foreach my $key (keys(%$record)) {
         my $new_portfiles;
         if ($key =~ /^resource\.($version_parts)\./ && $key =~ /\.portfiles$/ ) {
@@ -2933,7 +3072,8 @@ sub version_portfiles {
                 my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
 		my ($answer_name,$answer_ver,$answer_ext) =
 		    &file_name_version_ext($answer_file);
-                my @dir_list = &Apache::lonnet::dirlist($directory,$domain,$stu_name,$portfolio_root);
+                my $getpropath = 1;    
+                my @dir_list = &Apache::lonnet::dirlist($portfolio_root.$directory,$domain,$stu_name,$getpropath);
                 my $version = &get_next_version($answer_name, $answer_ext, \@dir_list);
                 my $new_answer = &version_selected_portfile($domain, $stu_name, $directory, $answer_file, $version);
                 if ($new_answer ne 'problem getting file') {
@@ -3292,7 +3432,7 @@ sub viewgrades {
 	$display =~ s|^Number of Attempts|Tries<br />|; # makes the column narrower
 	if  (!$display) { $display = &Apache::lonnet::metadata($url,$part.'.name'); }
 	my ($partid) = &split_part_type($part);
-        push(@partids, $partid);
+        push(@partids,$partid);
 	my $display_part=&get_display_part($partid,$symb);
 	if ($display =~ /^Partial Credit Factor/) {
 	    $result.='<th>'.
@@ -3446,7 +3586,7 @@ sub editgrades {
     my $header;
     while ($ctr < $env{'form.totalparts'}) {
 	my $partid = $env{'form.partid_'.$ctr};
-	push @partid,$partid;
+	push(@partid,$partid);
 	$weight{$partid} = $env{'form.weight_'.$partid};
 	$ctr++;
     }
@@ -4042,31 +4182,31 @@ sub csvuploadassign {
 		$grades{$store_key}=$entries{$fields{$dest}};
 	    }
 	}
-	if (! %grades) { push(@skipped,"$username:$domain no data to save"); }
-	$grades{"resource.regrader"}="$env{'user.name'}:$env{'user.domain'}";
-	my $result=&Apache::lonnet::cstore(\%grades,$symb,
+	if (! %grades) { 
+           push(@skipped,&mt("[_1]: no data to save","$username:$domain")); 
+        } else {
+	   $grades{"resource.regrader"}="$env{'user.name'}:$env{'user.domain'}";
+	   my $result=&Apache::lonnet::cstore(\%grades,$symb,
 					   $env{'request.course.id'},
 					   $domain,$username);
-	if ($result eq 'ok') {
-	    $request->print('.');
-	} else {
-	    $request->print("<p>
-                              <span class=\"LC_error\">
-                                 Failed to save student $username:$domain.
-                                 Message when trying to save was ($result)
-                              </span>
-                             </p>" );
-	}
-	$request->rflush();
-	$countdone++;
+	   if ($result eq 'ok') {
+	      $request->print('.');
+	   } else {
+	      $request->print("<p><span class=\"LC_error\">".
+                              &mt("Failed to save data for student [_1]. Message when trying to save was: [_2]",
+                                  "$username:$domain",$result)."</span></p>");
+	   }
+	   $request->rflush();
+	   $countdone++;
+        }
     }
-    $request->print("<br />Saved $countdone students\n");
+    $request->print('<br /><span class="LC_info">'.&mt("Saved [_1] students",$countdone)."</span>\n");
     if (@skipped) {
-	$request->print('<p><h4><b>Skipped Students</b></h4></p>');
+	$request->print('<p><span class="LC_warning">'.&mt('Skipped Students').'</span></p>');
 	foreach my $student (@skipped) { $request->print("$student<br />\n"); }
     }
     if (@notallowed) {
-	$request->print('<p><span class="LC_error">Students Not Allowed to Modify</span></p>');
+	$request->print('<p><span class="LC_error">'.&mt('Students Not Allowed to Modify').'</span></p>');
 	foreach my $student (@notallowed) { $request->print("$student<br />\n"); }
     }
     $request->print("<br />\n");
@@ -4256,7 +4396,8 @@ sub displayPage {
     my $result='<h3><span class="LC_info">&nbsp;'.$env{'form.title'}.'</span></h3>';
     $result.='<h3>&nbsp;'.&mt('Student: [_1]',&nameUserString(undef,$$fullname{$env{'form.student'}},$uname,$udom)).
 	'</h3>'."\n";
-    if (&Apache::lonnet::validCODE($env{'form.CODE'})) {
+    $env{'form.CODE'} = uc($env{'form.CODE'});
+    if (&Apache::lonnet::validCODE(uc($env{'form.CODE'}))) {
 	$result.='<h3>&nbsp;'.&mt('CODE: [_1]',$env{'form.CODE'}).'</h3>'."\n";
     } else {
 	delete($env{'form.CODE'});
@@ -4407,6 +4548,7 @@ sub displaySubByDates {
     }
 
     my $interaction;
+    my $no_increment = 1;
     for ($version=1;$version<=$$record{'version'};$version++) {
 	my $timestamp = 
 	    &Apache::lonlocal::locallocaltime($$record{$version.':timestamp'});
@@ -4450,7 +4592,8 @@ sub displaySubByDates {
 		    if (!exists($orders{$partid})) { $orders{$partid}={}; }
 		    if (!exists($orders{$partid}->{$responseId})) {
 			$orders{$partid}->{$responseId}=
-			    &get_order($partid,$responseId,$symb,$uname,$udom);
+			    &get_order($partid,$responseId,$symb,$uname,$udom,
+                                       $no_increment);
 		    }
 		    $displaySub[0].='</b>&nbsp; '.
 			&cleanRecord($$record{$version.':'.$matchKey},$responseType,$symb,$partid,$responseId,$record,$orders{$partid}->{$responseId},"$version:",$uname,$udom).'<br />';
@@ -4503,12 +4646,12 @@ sub updateGradeByPage {
     my ($uname,$udom) = split(/:/,$env{'form.student'});
     my $usec=$classlist->{$env{'form.student'}}[5];
     if (!&canmodify($usec)) {
-	$request->print('<span class="LC_warning">Unable to modify requested student.('.$env{'form.student'}.'</span>');
+	$request->print('<span class="LC_warning">'.&mt('Unable to modify requested student ([_1])',$env{'form.student'}).'</span>');
 	$request->print(&show_grading_menu_form($env{'form.symb'}));
 	return;
     }
     my $result='<h3><span class="LC_info">&nbsp;'.$env{'form.title'}.'</span></h3>';
-    $result.='<h3>&nbsp;Student: '.&nameUserString(undef,$env{'form.fullname'},$uname,$udom).
+    $result.='<h3>&nbsp;'.&mt('Student: ').&nameUserString(undef,$env{'form.fullname'},$uname,$udom).
 	'</h3>'."\n";
 
     $request->print($result);
@@ -4517,7 +4660,7 @@ sub updateGradeByPage {
     my ($mapUrl, $id, $resUrl) = &Apache::lonnet::decode_symb( $env{'form.page'});
     my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
     if (!$map) {
-	$request->print('<span class="LC_warning">Unable to grade requested sequence. ('.$resUrl.')</span>');
+	$request->print('<span class="LC_warning">'.&mt('Unable to grade requested sequence ([_1]).',$resUrl).'</span>');
 	my ($symb)=&get_symb($request);
 	$request->print(&show_grading_menu_form($symb));
 	return; 
@@ -4549,8 +4692,8 @@ sub updateGradeByPage {
 		&Apache::loncommon::start_data_table_row().
 		'<td align="center" valign="top" >'.$prob.
 		(scalar(@{$parts}) == 1 ? '' 
-                                        : '<br />('.&mt('[quant,_1,&nbsp;parts]',scalar(@{$parts}))
-		 ).')</td>';
+                                        : '<br />('.&mt('[quant,_1,&nbsp;part]',scalar(@{$parts}))
+		.')').'</td>';
 	    $studentTable.='<td valign="top">&nbsp;<b>'.$title.'</b>&nbsp;</td>';
 
 	    my %newrecord=();
@@ -4594,10 +4737,10 @@ sub updateGradeByPage {
 		}
 		my $display_part=&get_display_part($partid,$curRes->symb());
 		my $oldstatus = $env{'form.solved'.$question.'_'.$partid};
-		$displayPts[0].='&nbsp;<b>Part:</b> '.$display_part.' = '.
+		$displayPts[0].='&nbsp;<b>'.&mt('Part').':</b> '.$display_part.' = '.
 		    (($oldstatus eq 'excused') ? 'excused' : $oldpts).
 		    '&nbsp;<br />';
-		$displayPts[1].='&nbsp;<b>Part:</b> '.$display_part.' = '.
+		$displayPts[1].='&nbsp;<b>'.&mt('Part').':</b> '.$display_part.' = '.
 		     (($score eq 'excused') ? 'excused' : $newpts).
 		    '&nbsp;<br />';
 		$question++;
@@ -4646,9 +4789,9 @@ sub updateGradeByPage {
 
     $studentTable.=&Apache::loncommon::end_data_table();
     $studentTable.=&show_grading_menu_form($env{'form.symb'});
-    my $grademsg=($changeflag == 0 ? 'No score was changed or updated.' :
-		  'The scores were changed for '.
-		  $changeflag.' problem'.($changeflag == 1 ? '.' : 's.'));
+    my $grademsg=($changeflag == 0 ? &mt('No score was changed or updated.') :
+		  &mt('The scores were changed for [quant,_1,problem].',
+		  $changeflag));
     $request->print($grademsg.$studentTable);
 
     return '';
@@ -4757,6 +4900,69 @@ sub getSequenceDropDown {
     return $result;
 }
 
+my %bubble_lines_per_response;     # no. bubble lines for each response.
+                                   # index is "symb.part_id"
+
+my %first_bubble_line;             # First bubble line no. for each bubble.
+
+my %subdivided_bubble_lines;       # no. bubble lines for optionresponse, 
+                                   # matchresponse or rankresponse, where 
+                                   # an individual response can have multiple 
+                                   # lines
+
+my %responsetype_per_response;     # responsetype for each response
+
+# Save and restore the bubble lines array to the form env.
+
+
+sub save_bubble_lines {
+    foreach my $line (keys(%bubble_lines_per_response)) {
+	$env{"form.scantron.bubblelines.$line"}  = $bubble_lines_per_response{$line};
+	$env{"form.scantron.first_bubble_line.$line"} =
+	    $first_bubble_line{$line};
+        $env{"form.scantron.sub_bubblelines.$line"} = 
+            $subdivided_bubble_lines{$line};
+        $env{"form.scantron.responsetype.$line"} =
+            $responsetype_per_response{$line};
+    }
+}
+
+
+sub restore_bubble_lines {
+    my $line = 0;
+    %bubble_lines_per_response = ();
+    while ($env{"form.scantron.bubblelines.$line"}) {
+	my $value = $env{"form.scantron.bubblelines.$line"};
+	$bubble_lines_per_response{$line} = $value;
+	$first_bubble_line{$line}  =
+	    $env{"form.scantron.first_bubble_line.$line"};
+        $subdivided_bubble_lines{$line} =
+            $env{"form.scantron.sub_bubblelines.$line"};
+        $responsetype_per_response{$line} =
+            $env{"form.scantron.responsetype.$line"};
+	$line++;
+    }
+
+}
+
+#  Given the parsed scanline, get the response for 
+#  'answer' number n:
+
+sub get_response_bubbles {
+    my ($parsed_line, $response)  = @_;
+
+
+    my $bubble_line = $first_bubble_line{$response-1} +1;
+    my $bubble_lines= $bubble_lines_per_response{$response-1};
+    
+    my $selected = "";
+
+    for (my $bline = 0; $bline < $bubble_lines; $bline++) {
+	$selected .= $$parsed_line{"scantron.$bubble_line.answer"}.":";
+	$bubble_line++;
+    }
+    return $selected;
+}
 
 =pod 
 
@@ -4769,8 +4975,9 @@ sub getSequenceDropDown {
 sub scantron_filenames {
     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
     my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
+    my $getpropath = 1;
     my @files=&Apache::lonnet::dirlist('userfiles',$cdom,$cname,
-				    &propath($cdom,$cname));
+                                       $getpropath);
     my @possiblenames;
     foreach my $filename (sort(@files)) {
 	($filename)=split(/&/,$filename);
@@ -4813,19 +5020,76 @@ sub scantron_uploads {
 =cut
 
 sub scantron_scantab {
-    my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
     my $result='<select name="scantron_format">'."\n";
     $result.='<option></option>'."\n";
-    foreach my $line (<$fh>) {
-	my ($name,$descrip)=split(/:/,$line);
-	if ($name =~ /^\#/) { next; }
-	$result.='<option value="'.$name.'">'.$descrip.'</option>'."\n";
+    my @lines = &get_scantronformat_file();
+    if (@lines > 0) {
+        foreach my $line (@lines) {
+            next if (($line =~ /^\#/) || ($line eq ''));
+	    my ($name,$descrip)=split(/:/,$line);
+	    $result.='<option value="'.$name.'">'.$descrip.'</option>'."\n";
+        }
     }
     $result.='</select>'."\n";
-
     return $result;
 }
 
+=pod
+
+=item get_scantronformat_file
+
+  Returns an array containing lines from the scantron format file for
+  the domain of the course.
+
+  If a url for a custom.tab file is listed in domain's configuration.db, 
+  lines are from this file.
+
+  Otherwise, if a default.tab has been published in RES space by the 
+  domainconfig user, lines are from this file.
+
+  Otherwise, fall back to getting lines from the legacy file on the
+  local server:  /home/httpd/lonTabs/default_scantronformat.tab    
+
+=cut
+
+sub get_scantronformat_file {
+    my $cdom= $env{'course.'.$env{'request.course.id'}.'.domain'};
+    my %domconfig = &Apache::lonnet::get_dom('configuration',['scantron'],$cdom);
+    my $gottab = 0;
+    my @lines;
+    if (ref($domconfig{'scantron'}) eq 'HASH') {
+        if ($domconfig{'scantron'}{'scantronformat'} ne '') {
+            my $formatfile = &Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonDocRoot'}.$domconfig{'scantron'}{'scantronformat'});
+            if ($formatfile ne '-1') {
+                @lines = split("\n",$formatfile,-1);
+                $gottab = 1;
+            }
+        }
+    }
+    if (!$gottab) {
+        my $confname = $cdom.'-domainconfig';
+        my $default = $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/'.$cdom.'/'.$confname.'/default.tab';
+        my $formatfile =  &Apache::lonnet::getfile($default);
+        if ($formatfile ne '-1') {
+            @lines = split("\n",$formatfile,-1);
+            $gottab = 1;
+        }
+    }
+    if (!$gottab) {
+        my @domains = &Apache::lonnet::current_machine_domains();
+        if (grep(/^\Q$cdom\E$/,@domains)) {
+            my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
+            @lines = <$fh>;
+            close($fh);
+        } else {
+            my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/default_scantronformat.tab');
+            @lines = <$fh>;
+            close($fh);
+        }
+    }
+    return @lines;
+}
+
 =pod 
 
 =item scantron_CODElist
@@ -4899,54 +5163,52 @@ sub scantron_selectphase {
     my $CODE_unique=&scantron_CODEunique();
     my $result;
 
+    $ssi_error = 0;
+
     # Chunk of form to prompt for a file to grade and how:
 
-    $result.= <<SCANTRONFORM;
-    <table width="100%" border="0">
-    <tr>
-      <td bgcolor="#777777">
-       <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantron_process">
-       <input type="hidden" name="command" value="scantron_warning" />
-        $default_form_data
-        <table width="100%" border="0">
-          <tr bgcolor="#e6ffff">
-            <td colspan="2">
-              &nbsp;<b>Specify file and which Folder/Sequence to grade</b>
-            </td>
-          </tr>
-          <tr bgcolor="#ffffe6">
-            <td> Sequence to grade: </td><td> $sequence_selector </td>
-          </tr>
-          <tr bgcolor="#ffffe6">
-            <td> Filename of scoring office file: </td><td> $file_selector </td>
-          </tr>
-          <tr bgcolor="#ffffe6">
-            <td> Format of data file: </td><td> $format_selector </td>
-          </tr>
-          <tr bgcolor="#ffffe6">
-            <td> Saved CODEs to validate against: </td><td> $CODE_selector</td>
-          </tr>
-          <tr bgcolor="#ffffe6">
-            <td> Each CODE is only to be used once:</td><td> $CODE_unique </td>
-          </tr>
-          <tr bgcolor="#ffffe6">
-	    <td> Options: </td>
+    $result.= '
+    <br />
+    <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantron_process">
+    <input type="hidden" name="command" value="scantron_warning" />
+    '.$default_form_data.'
+    '.&Apache::loncommon::start_data_table('LC_scantron_action').'
+       '.&Apache::loncommon::start_data_table_header_row().'
+            <th colspan="2">
+              &nbsp;'.&mt('Specify file and which Folder/Sequence to grade').'
+            </th>
+       '.&Apache::loncommon::end_data_table_header_row().'
+       '.&Apache::loncommon::start_data_table_row().'
+            <td> '.&mt('Sequence to grade:').' </td><td> '.$sequence_selector.' </td>
+       '.&Apache::loncommon::end_data_table_row().'
+       '.&Apache::loncommon::start_data_table_row().'
+            <td> '.&mt('Filename of scoring office file:').' </td><td> '.$file_selector.' </td>
+       '.&Apache::loncommon::end_data_table_row().'
+       '.&Apache::loncommon::start_data_table_row().'
+            <td> '.&mt('Format of data file:').' </td><td> '.$format_selector.' </td>
+       '.&Apache::loncommon::end_data_table_row().'
+       '.&Apache::loncommon::start_data_table_row().'
+            <td> '.&mt('Saved CODEs to validate against:').' </td><td> '.$CODE_selector.' </td>
+       '.&Apache::loncommon::end_data_table_row().'
+       '.&Apache::loncommon::start_data_table_row().'
+            <td> '.&mt('Each CODE is only to be used once:').'</td><td> '.$CODE_unique.' </td>
+       '.&Apache::loncommon::end_data_table_row().'
+       '.&Apache::loncommon::start_data_table_row().'
+	    <td> '.&mt('Options:').' </td>
             <td>
-	       <label><input type="checkbox" name="scantron_options_redo" value="redo_skipped"/> Do only previously skipped records</label> <br />
-               <label><input type="checkbox" name="scantron_options_ignore" value="ignore_corrections"/> Remove all existing corrections</label> <br />
-               <label><input type="checkbox" name="scantron_options_hidden" value="ignore_hidden"/> Skip hidden resources when grading</label>
+	       <label><input type="checkbox" name="scantron_options_redo" value="redo_skipped"/> '.&mt('Do only previously skipped records').'</label> <br />
+               <label><input type="checkbox" name="scantron_options_ignore" value="ignore_corrections"/> '.&mt('Remove all existing corrections').'</label> <br />
+               <label><input type="checkbox" name="scantron_options_hidden" value="ignore_hidden"/> '.&mt('Skip hidden resources when grading').'</label>
 	    </td>
-          </tr>
-          <tr bgcolor="#ffffe6">
+       '.&Apache::loncommon::end_data_table_row().'
+       '.&Apache::loncommon::start_data_table_row().'
             <td colspan="2">
-              <input type="submit" value="Grading: Validate Scantron Records" />
+              <input type="submit" value="'.&mt('Grading: Validate Scantron Records').'" />
             </td>
-          </tr>
-        </table>
-      </form>
-     </td>
-    </tr>
-SCANTRONFORM
+       '.&Apache::loncommon::end_data_table_row().'
+    '.&Apache::loncommon::end_data_table().'
+    </form>
+';
    
     $r->print($result);
 
@@ -4955,86 +5217,105 @@ SCANTRONFORM
 
 	# Chunk of form to prompt for a scantron file upload.
 
-        $r->print(<<SCANTRONFORM);
-    <tr>
-      <td bgcolor="#777777">
-        <table width="100%" border="0">
-          <tr bgcolor="#e6ffff">
+        $r->print('
+    <br />
+    '.&Apache::loncommon::start_data_table('LC_scantron_action').'
+       '.&Apache::loncommon::start_data_table_header_row().'
+            <th>
+              &nbsp;'.&mt('Specify a Scantron data file to upload.').'
+            </th>
+       '.&Apache::loncommon::end_data_table_header_row().'
+       '.&Apache::loncommon::start_data_table_row().'
             <td>
-              &nbsp;<b>Specify a Scantron data file to upload.</b>
-            </td>
-          </tr>
-          <tr bgcolor="#ffffe6">
-            <td>
-SCANTRONFORM
+');
     my $default_form_data=&defaultFormData(&get_symb($r,1));
     my $cdom= $env{'course.'.$env{'request.course.id'}.'.domain'};
     my $cnum= $env{'course.'.$env{'request.course.id'}.'.num'};
-    $r->print(<<UPLOAD);
+    $r->print('
               <script type="text/javascript" language="javascript">
     function checkUpload(formname) {
 	if (formname.upfile.value == "") {
-	    alert("Please use the browse button to select a file from your local directory.");
+	    alert("'.&mt('Please use the browse button to select a file from your local directory.').'");
 	    return false;
 	}
 	formname.submit();
     }
               </script>
 
-              <form enctype='multipart/form-data' action='/adm/grades' name='rules' method='post'>
-                $default_form_data
-                <input name='courseid' type='hidden' value='$cnum' />
-                <input name='domainid' type='hidden' value='$cdom' />
-                <input name='command' value='scantronupload_save' type='hidden' />
-                File to upload:<input type="file" name="upfile" size="50" />
+              <form enctype="multipart/form-data" action="/adm/grades" name="rules" method="post">
+                '.$default_form_data.'
+                <input name="courseid" type="hidden" value="'.$cnum.'" />
+                <input name="domainid" type="hidden" value="'.$cdom.'" />
+                <input name="command" value="scantronupload_save" type="hidden" />
+                '.&mt('File to upload: [_1]','<input type="file" name="upfile" size="50" />').'
                 <br />
-                <input type="button" onClick="javascript:checkUpload(this.form);" value="Upload Scantron Data" />
+                <input type="button" onClick="javascript:checkUpload(this.form);" value="'.&mt('Upload Scantron Data').'" />
               </form>
-UPLOAD
+');
 
-        $r->print(<<SCANTRONFORM);
+        $r->print('
             </td>
-          </tr>
-        </table>
-      </td>
-    </tr>
-SCANTRONFORM
+       '.&Apache::loncommon::end_data_table_row().'
+       '.&Apache::loncommon::end_data_table().'
+');
     }
 
     # Chunk of the form that prompts to view a scoring office file,
     # corrected file, skipped records in a file.
 
-    $r->print(<<SCANTRONFORM);
-    <tr>
-     <td bgcolor="#777777">
-       <form action='/adm/grades' name='scantron_download'>
-	  $default_form_data
-          <input type="hidden" name="command" value="scantron_download" />
-          <table width="100%" border="0">
-            <tr bgcolor="#e6ffff">
-              <td>
-                &nbsp;<b>Download a scoring office file</b>
-              </td>
-            </tr>
-            <tr bgcolor="#ffffe6">
-              <td> Filename of scoring office file: $file_selector </td>
-            </tr>
-            <tr bgcolor="#ffffe6">
-              <td>
-                <input type="submit" value="Download: Show List of Associated Files" />
-              </td>
-            </tr>
-          </table>
-        </form>
-      </td>
-    </tr>
-SCANTRONFORM
+    $r->print('
+   <br />
+   <form action="/adm/grades" name="scantron_download">
+     '.$default_form_data.'
+     <input type="hidden" name="command" value="scantron_download" />
+     '.&Apache::loncommon::start_data_table('LC_scantron_action').'
+       '.&Apache::loncommon::start_data_table_header_row().'
+              <th>
+                &nbsp;'.&mt('Download a scoring office file').'
+              </th>
+       '.&Apache::loncommon::end_data_table_header_row().'
+       '.&Apache::loncommon::start_data_table_row().'
+              <td> '.&mt('Filename of scoring office file: [_1]',$file_selector).' 
+                <br />
+                <input type="submit" value="'.&mt('Download: Show List of Associated Files').'" />
+       '.&Apache::loncommon::end_data_table_row().'
+     '.&Apache::loncommon::end_data_table().'
+   </form>
+   <br />
+');
 
-    $r->print('<tr><td bgcolor="#777777">');
     &Apache::lonpickcode::code_list($r,2);
-    $r->print('</td></tr></table>');
+
+    $r->print('<br /><form method="post" name="checkscantron">'.
+             $default_form_data."\n".
+             &Apache::loncommon::start_data_table('LC_scantron_action')."\n".
+             &Apache::loncommon::start_data_table_header_row()."\n".
+             '<th colspan="2">
+              &nbsp;'.&mt('Review scantron data and submissions for a previously graded folder/sequence')."\n".
+             '</th>'."\n".
+              &Apache::loncommon::end_data_table_header_row()."\n".
+              &Apache::loncommon::start_data_table_row()."\n".
+              '<td> '.&mt('Graded folder/sequence:').' </td>'."\n".
+              '<td> '.$sequence_selector.' </td>'.
+              &Apache::loncommon::end_data_table_row()."\n".
+              &Apache::loncommon::start_data_table_row()."\n".
+              '<td> '.&mt('Filename of scoring office file:').' </td>'."\n".
+              '<td> '.$file_selector.' </td>'."\n".
+              &Apache::loncommon::end_data_table_row()."\n".
+              &Apache::loncommon::start_data_table_row()."\n".
+              '<td> '.&mt('Format of data file:').' </td>'."\n".
+              '<td> '.$format_selector.' </td>'."\n".
+              &Apache::loncommon::end_data_table_row()."\n".
+              &Apache::loncommon::start_data_table_row()."\n".
+              '<td colspan="2">'."\n".
+              '<input type="hidden" name="command" value="checksubmissions" />'."\n".
+              '<input type="submit" value="'.&mt('Review Scantron Data and Submission Records').'" />'."\n".
+              '</td>'."\n".
+              &Apache::loncommon::end_data_table_row()."\n".
+              &Apache::loncommon::end_data_table()."\n".
+              '</form><br />');
     $r->print($grading_menu_button);
-    return
+    return;
 }
 
 =pod
@@ -5096,10 +5377,10 @@ SCANTRONFORM
 
 sub get_scantron_config {
     my ($which) = @_;
-    my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
+    my @lines = &get_scantronformat_file();
     my %config;
     #FIXME probably should move to XML it has already gotten a bit much now
-    foreach my $line (<$fh>) {
+    foreach my $line (@lines) {
 	my ($name,$descrip)=split(/:/,$line);
 	if ($name ne $which ) { next; }
 	chomp($line);
@@ -5112,7 +5393,7 @@ sub get_scantron_config {
 	$config{'IDstart'}=$config[5];
 	$config{'IDlength'}=$config[6];
 	$config{'Qstart'}=$config[7];
-	$config{'Qlength'}=$config[8];
+ 	$config{'Qlength'}=$config[8];
 	$config{'Qoff'}=$config[9];
 	$config{'Qon'}=$config[10];
 	$config{'PaperID'}=$config[11];
@@ -5186,6 +5467,8 @@ sub username_to_idmap {
                           - 'answer'
                                'response' - new answer or 'none' if blank
                                'question' - the bubble line to change
+                               'questionnum' - the question identifier,
+                                               may include subquestion. 
 
   Returns:
     $line - the modified scanline
@@ -5198,8 +5481,6 @@ sub username_to_idmap {
 
 sub scantron_fixup_scanline {
     my ($scantron_config,$scan_data,$line,$whichline,$field,$args)=@_;
-    
-    
     if ($field eq 'ID') {
 	if (length($args->{'newid'}) > $$scantron_config{'IDlength'}) {
 	    return ($line,1,'New value too large');
@@ -5230,58 +5511,28 @@ sub scantron_fixup_scanline {
 		   $$scantron_config{'CODElength'})=$args->{'CODE'};
 	}
     } elsif ($field eq 'answer') {
-	&scantron_get_maxbubble(); # Need the bubble counter info.
-	my $length =$scantron_config->{'Qlength'};
+	my $length=$scantron_config->{'Qlength'};
 	my $off=$scantron_config->{'Qoff'};
 	my $on=$scantron_config->{'Qon'};
-        my $question_number = $args->{'question'} -1;
-        my $first_position  = $first_bubble_line{$question_number};
-	my $bubble_count    = $bubble_lines_per_response{$question_number};
-        my $bubbles_per_line= $$scantron_config{'Qlength'};
-	my $answer=${off}x($bubbles_per_line*$bubble_count);
-        my $final_answer;
-        if ($$scantron_config{'Qon'} eq 'letter'  ||
-	    $$scantron_config{'Qon'} eq 'number') { 
-	    $bubbles_per_line = 10;
-	}
-	if (defined $args->{'response'}) {
-	    
-	    if ($args->{'response'} eq 'none') {
-		&scan_data($scan_data,
-			   "$whichline.no_bubble.".$args->{'question'},'1');
+	my $answer=${off}x$length;
+	if ($args->{'response'} eq 'none') {
+	    &scan_data($scan_data,
+		       "$whichline.no_bubble.".$args->{'questionnum'},'1');
+	} else {
+	    if ($on eq 'letter') {
+		my @alphabet=('A'..'Z');
+		$answer=$alphabet[$args->{'response'}];
+	    } elsif ($on eq 'number') {
+		$answer=$args->{'response'}+1;
+		if ($answer == 10) { $answer = '0'; }
 	    } else {
-		my ($bubble_line, $bubble_number) = split(/:/,$args->{'response'});
-		if ($on eq 'letter') {
-		    my @alphabet=('A'..'Z');
-		    $answer=$alphabet[$bubble_number];
-		} elsif ($on eq 'number') {
-		    $answer= $bubble_number+1;
-		    if ($answer == 10) { $answer = '0'; }
-		} else {
-		    substr($answer,$bubble_number+$bubble_line*$bubbles_per_line,1)=$on;
-		    $final_answer = $answer;
-		}
-		&scan_data($scan_data,
-			   "$whichline.no_bubble.".$args->{'question'},undef,'1');
-		
-		# Positional notation already has the right final answer length..
-
-		if (($on eq 'letter') || ($on eq 'number')) {
-		    for (my $l = 0; $l < $bubble_count; $l++) {
-			if ($l eq $bubble_line) {
-			    $final_answer .= $answer;
-			} else {
-			    $final_answer .= ' ';
-			}
-		    }
-		}
+		substr($answer,$args->{'response'},1)=$on;
 	    }
-	    # $where=$length*($args->{'question'}-1)+$scantron_config->{'Qstart'};
-	    #substr($line,$where-1,$length)=$answer;
-	    substr($line, 
-		   $scantron_config->{'Qstart'}+$first_position-1,
-		   $bubbles_per_line*$length) = $final_answer;
+	    &scan_data($scan_data,
+		       "$whichline.no_bubble.".$args->{'questionnum'},undef,'1');
 	}
+	my $where=$length*($args->{'question'}-1)+$scantron_config->{'Qstart'};
+	substr($line,$where-1,$length)=$answer;
     }
     return $line;
 }
@@ -5315,6 +5566,39 @@ sub scan_data {
     return $scan_data->{$filename.'_'.$key};
 }
 
+# ----- These first few routines are general use routines.----
+
+# Return the number of occurences of a pattern in a string.
+
+sub occurence_count {
+    my ($string, $pattern) = @_;
+
+    my @matches = ($string =~ /$pattern/g);
+
+    return scalar(@matches);
+}
+
+
+# Take a string known to have digits and convert all the
+# digits into letters in the range J,A..I.
+
+sub digits_to_letters {
+    my ($input) = @_;
+
+    my @alphabet = ('J', 'A'..'I');
+
+    my @input    = split(//, $input);
+    my $output ='';
+    for (my $i = 0; $i < scalar(@input); $i++) {
+	if ($input[$i] =~ /\d/) {
+	    $output .= $alphabet[$input[$i]];
+	} else {
+	    $output .= $input[$i];
+	}
+    }
+    return $output;
+}
+
 =pod 
 
 =item scantron_parse_scanline
@@ -5417,168 +5701,218 @@ sub scantron_parse_scanline {
     $questions =~ s/\r$//;      # Get rid of trailing \r too (MAC or Win uploads).
     while (length($questions)) {
 	my $answers_needed = $bubble_lines_per_response{$questnum};
-	my $answer_length  = $$scantron_config{'Qlength'} * $answers_needed;
-
-
-
-	$questnum++;
-	my $currentquest = substr($questions,0,$answer_length);
-	$questions       = substr($questions,0,$answer_length)='';
-	if (length($currentquest) < $answer_length) { next; }
-
-	# Qon letter implies for each slot in currentquest we have:
-	#    ? or * for doubles a letter in A-Z for a bubble and
-        #    about anything else (esp. a value of Qoff for missing
-	#    bubbles.
-
-
-	if ($$scantron_config{'Qon'} eq 'letter') {
-
-	    if ($currentquest =~ /\?/
-		|| $currentquest =~ /\*/
-		|| (&occurence_count($currentquest, "[A-Z]") > 1)) {
-		push(@{$record{'scantron.doubleerror'}},$questnum);
-		for (my $ans = 0; $ans < $answers_needed; $ans++) { 
-		    my $bubble = substr($currentquest, $ans, 1);
-		    if ($bubble =~ /[A-Z]/ ) {
-			$record{"scantron.$ansnum.answer"} = $bubble;
-		    } else {
-			$record{"scantron.$ansnum.answer"}='';
-		    }
-		    $ansnum++;
-		}
-
-	    } elsif (!defined($currentquest)
-		     || (&occurence_count($currentquest, $$scantron_config{'Qoff'}) == length($currentquest))
-		     || (&occurence_count($currentquest, "[A-Z]") == 0)) {
-		for (my $ans = 0; $ans < $answers_needed; $ans++ ) {
-		    $record{"scantron.$ansnum.answer"}='';
-		    $ansnum++;
-
-		}
-		if (!&scan_data($scan_data,"$whichline.no_bubble.$questnum")) {
-		    push(@{$record{"scantron.missingerror"}},$questnum);
-		   #  $ansnum += $answers_needed;
-		}
-	    } else {
-		for (my $ans = 0; $ans < $answers_needed; $ans++) {
-		    $record{"scantron.$ansnum.answer"} = substr($currentquest, $ans, 1);
-		    $ansnum++;
-		}
-	    }
-
-	# Qon 'number' implies each slot gives a digit that indexes the
-	#    the bubbles filled or Qoff or a non number for unbubbled lines.
-        #    and *? for double bubbles on a line.
-	#    these answers are also stored as letters.
-
-	} elsif ($$scantron_config{'Qon'} eq 'number') {
-	    if ($currentquest =~ /\?/
-		|| $currentquest =~ /\*/
-		|| (&occurence_count($currentquest, '\d') > 1)) {
-		push(@{$record{'scantron.doubleerror'}},$questnum);
-		for (my $ans = 0; $ans < $answers_needed; $ans++) {
-		    my $bubble = substr($currentquest, $ans, 1);
-		    if ($bubble =~ /\d/) {
-			$record{"scantron.$ansnum.answer"} = $alphabet[$bubble];
-		    } else {
-			$record{"scantron.$ansnum.answer"}=' ';
-		    }
-		    $ansnum++;
-		}
-
-	    } elsif (!defined($currentquest)
-		     || (&occurence_count($currentquest,$$scantron_config{'Qoff'}) == length($currentquest)) 
-		     || (&occurence_count($currentquest, '\d') == 0)) {
-		for (my $ans = 0; $ans < $answers_needed; $ans++ ) {
-		    $record{"scantron.$ansnum.answer"}='';
-		    $ansnum++;
-
-		}
-		if (!&scan_data($scan_data,"$whichline.no_bubble.$questnum")) {
-		    push(@{$record{"scantron.missingerror"}},$questnum);
-		    $ansnum += $answers_needed;
-		}
+        my $answer_length  = ($$scantron_config{'Qlength'} * $answers_needed)
+                             || 1;
+        $questnum++;
+        my $quest_id = $questnum;
+        my $currentquest = substr($questions,0,$answer_length);
+        $questions       = substr($questions,$answer_length);
+        if (length($currentquest) < $answer_length) { next; }
+
+        if ($subdivided_bubble_lines{$questnum-1} =~ /,/) {
+            my $subquestnum = 1;
+            my $subquestions = $currentquest;
+            my @subanswers_needed = 
+                split(/,/,$subdivided_bubble_lines{$questnum-1});  
+            foreach my $subans (@subanswers_needed) {
+                my $subans_length =
+                    ($$scantron_config{'Qlength'} * $subans)  || 1;
+                my $currsubquest = substr($subquestions,0,$subans_length);
+                $subquestions   = substr($subquestions,$subans_length);
+                $quest_id = "$questnum.$subquestnum";
+                if (($$scantron_config{'Qon'} eq 'letter') ||
+                    ($$scantron_config{'Qon'} eq 'number')) {
+                    $ansnum = &scantron_validator_lettnum($ansnum, 
+                        $questnum,$quest_id,$subans,$currsubquest,$whichline,
+                        \@alphabet,\%record,$scantron_config,$scan_data);
+                } else {
+                    $ansnum = &scantron_validator_positional($ansnum,
+                        $questnum,$quest_id,$subans,$currsubquest,$whichline,                        \@alphabet,\%record,$scantron_config,$scan_data);
+                }
+                $subquestnum ++;
+            }
+        } else {
+            if (($$scantron_config{'Qon'} eq 'letter') ||
+                ($$scantron_config{'Qon'} eq 'number')) {
+                $ansnum = &scantron_validator_lettnum($ansnum,$questnum,
+                    $quest_id,$answers_needed,$currentquest,$whichline,
+                    \@alphabet,\%record,$scantron_config,$scan_data);
+            } else {
+                $ansnum = &scantron_validator_positional($ansnum,$questnum,
+                    $quest_id,$answers_needed,$currentquest,$whichline,
+                    \@alphabet,\%record,$scantron_config,$scan_data);
+            }
+        }
+    }
+    $record{'scantron.maxquest'}=$questnum;
+    return \%record;
+}
 
-	    } else {
-		$currentquest = &digits_to_letters($currentquest);
-		for (my $ans =0; $ans < $answers_needed; $ans++) {
-		    $record{"scantron.$ansnum.answer"} = substr($currentquest, $ans, 1);
-		    $ansnum++;
-		}
-	    }
-	} else {
+sub scantron_validator_lettnum {
+    my ($ansnum,$questnum,$quest_id,$answers_needed,$currquest,$whichline,
+        $alphabet,$record,$scantron_config,$scan_data) = @_;
+
+    # Qon 'letter' implies for each slot in currquest we have:
+    #    ? or * for doubles, a letter in A-Z for a bubble, and
+    #    about anything else (esp. a value of Qoff) for missing
+    #    bubbles.
+    #
+    # Qon 'number' implies each slot gives a digit that indexes the
+    #    bubbles filled, or Qoff, or a non-number for unbubbled lines,
+    #    and * or ? for double bubbles on a single line.
+    #
 
-	    # Otherwise there's a positional notation;
-	    # each bubble line requires Qlength items, and there are filled in
-	    # bubbles for each case where there 'Qon' characters.
-	    #
+    my $matchon;
+    if ($$scantron_config{'Qon'} eq 'letter') {
+        $matchon = '[A-Z]';
+    } elsif ($$scantron_config{'Qon'} eq 'number') {
+        $matchon = '\d';
+    }
+    my $occurrences = 0;
+    if (($responsetype_per_response{$questnum-1} eq 'essayresponse') ||
+        ($responsetype_per_response{$questnum-1} eq 'formularesponse') ||
+        ($responsetype_per_response{$questnum-1} eq 'stringresponse') ||
+        ($responsetype_per_response{$questnum-1} eq 'imageresponse') ||
+        ($responsetype_per_response{$questnum-1} eq 'reactionresponse') ||
+        ($responsetype_per_response{$questnum-1} eq 'organicresponse')) {
+        my @singlelines = split('',$currquest);
+        foreach my $entry (@singlelines) {
+            $occurrences = &occurence_count($entry,$matchon);
+            if ($occurrences > 1) {
+                last;
+            }
+        } 
+    } else {
+        $occurrences = &occurence_count($currquest,$matchon); 
+    }
+    if (($currquest =~ /\?/ || $currquest =~ /\*/) || ($occurrences > 1)) {
+        push(@{$record->{'scantron.doubleerror'}},$quest_id);
+        for (my $ans=0; $ans<$answers_needed; $ans++) {
+            my $bubble = substr($currquest,$ans,1);
+            if ($bubble =~ /$matchon/ ) {
+                if ($$scantron_config{'Qon'} eq 'number') {
+                    if ($bubble == 0) {
+                        $bubble = 10; 
+                    }
+                    $record->{"scantron.$ansnum.answer"} = 
+                        $alphabet->[$bubble-1];
+                } else {
+                    $record->{"scantron.$ansnum.answer"} = $bubble;
+                }
+            } else {
+                $record->{"scantron.$ansnum.answer"}='';
+            }
+            $ansnum++;
+        }
+    } elsif (!defined($currquest)
+            || (&occurence_count($currquest, $$scantron_config{'Qoff'}) == length($currquest))
+            || (&occurence_count($currquest,$matchon) == 0)) {
+        for (my $ans=0; $ans<$answers_needed; $ans++ ) {
+            $record->{"scantron.$ansnum.answer"}='';
+            $ansnum++;
+        }
+        if (!&scan_data($scan_data,"$whichline.no_bubble.$quest_id")) {
+            push(@{$record->{'scantron.missingerror'}},$quest_id);
+        }
+    } else {
+        if ($$scantron_config{'Qon'} eq 'number') {
+            $currquest = &digits_to_letters($currquest);            
+        }
+        for (my $ans=0; $ans<$answers_needed; $ans++) {
+            my $bubble = substr($currquest,$ans,1);
+            $record->{"scantron.$ansnum.answer"} = $bubble;
+            $ansnum++;
+        }
+    }
+    return $ansnum;
+}
 
-	    my @array=split($$scantron_config{'Qon'},$currentquest,-1);
+sub scantron_validator_positional {
+    my ($ansnum,$questnum,$quest_id,$answers_needed,$currquest,
+        $whichline,$alphabet,$record,$scantron_config,$scan_data) = @_;
 
-	    # If the split only  giveas us one element.. the full length of the
-	    # answser string, no bubbles are filled in:
+    # Otherwise there's a positional notation;
+    # each bubble line requires Qlength items, and there are filled in
+    # bubbles for each case where there 'Qon' characters.
+    #
 
-	    if (length($array[0]) eq $$scantron_config{'Qlength'}*$answers_needed) {
-		for (my $ans = 0; $ans < $answers_needed; $ans++ ) {
-		    $record{"scantron.$ansnum.answer"}='';
-		    $ansnum++;
+    my @array=split($$scantron_config{'Qon'},$currquest,-1);
 
-		}
-		if (!&scan_data($scan_data,"$whichline.no_bubble.$questnum")) {
-		    push(@{$record{"scantron.missingerror"}},$questnum);
-		}
-		
-		#  If the bubble is not the last position, there will be
-		# 2 elements.  If it is the last position, there will be 1 element.
+    # If the split only gives us one element.. the full length of the
+    # answer string, no bubbles are filled in:
 
-	    } elsif (scalar(@array) le 2) {
+    if ($answers_needed eq '') {
+        return;
+    }
 
-		my $location      = length($array[0]);
-		my $line_num      = int($location / $$scantron_config{'Qlength'});
-		my $bubble        = $alphabet[$location % $$scantron_config{'Qlength'}];
-		
+    if (length($array[0]) eq $$scantron_config{'Qlength'}*$answers_needed) {
+        for (my $ans=0; $ans<$answers_needed; $ans++ ) {
+            $record->{"scantron.$ansnum.answer"}='';
+            $ansnum++;
+        }
+        if (!&scan_data($scan_data,"$whichline.no_bubble.$quest_id")) {
+            push(@{$record->{"scantron.missingerror"}},$quest_id);
+        }
+    } elsif (scalar(@array) == 2) {
+        my $location = length($array[0]);
+        my $line_num = int($location / $$scantron_config{'Qlength'});
+        my $bubble   = $alphabet->[$location % $$scantron_config{'Qlength'}];
+        for (my $ans=0; $ans<$answers_needed; $ans++) {
+            if ($ans eq $line_num) {
+                $record->{"scantron.$ansnum.answer"} = $bubble;
+            } else {
+                $record->{"scantron.$ansnum.answer"} = ' ';
+            }
+            $ansnum++;
+         }
+    } else {
+        #  If there's more than one instance of a bubble character
+        #  That's a double bubble; with positional notation we can
+        #  record all the bubbles filled in as well as the
+        #  fact this response consists of multiple bubbles.
+        #
+        if (($responsetype_per_response{$questnum-1} eq 'essayresponse') ||
+            ($responsetype_per_response{$questnum-1} eq 'formularesponse') ||
+            ($responsetype_per_response{$questnum-1} eq 'stringresponse') ||
+            ($responsetype_per_response{$questnum-1} eq 'imageresponse') ||
+            ($responsetype_per_response{$questnum-1} eq 'reactionresponse') ||
+            ($responsetype_per_response{$questnum-1} eq 'organicresponse')) {
+            my $doubleerror = 0;
+            while (($currquest >= $$scantron_config{'Qlength'}) && 
+                   (!$doubleerror)) {
+               my $currline = substr($currquest,0,$$scantron_config{'Qlength'});
+               $currquest = substr($currquest,$$scantron_config{'Qlength'});
+               my @currarray = split($$scantron_config{'Qon'},$currline,-1);
+               if (length(@currarray) > 2) {
+                   $doubleerror = 1;
+               } 
+            }
+            if ($doubleerror) {
+                push(@{$record->{'scantron.doubleerror'}},$quest_id);
+            }
+        } else {
+            push(@{$record->{'scantron.doubleerror'}},$quest_id);
+        }
+        my $item = $ansnum;
+        for (my $ans=0; $ans<$answers_needed; $ans++) {
+            $record->{"scantron.$item.answer"} = '';
+            $item ++;
+        }
 
-		for (my $ans = 0; $ans < $answers_needed; $ans++) {
-		    if ($ans eq $line_num) {
-			$record{"scantron.$ansnum.answer"} = $bubble;
-		    } else {
-			$record{"scantron.$ansnum.answer"} = ' ';
-		    }
-		    $ansnum++;
-		}
-	    }
-	    #  If there's more than one instance of a bubble character
-	    #  That's a double bubble; with positional notation we can
-	    #  record all the bubbles filled in as well as the 
-	    #  fact this response consists of multiple bubbles.
-	    #
-	    else {
-		push(@{$record{'scantron.doubleerror'}},$questnum);
-
-		my $first_answer = $ansnum;
-		for (my $ans =0; $ans < $answers_needed; $ans++) {
-		    my $item = $first_answer+$ans;
-		    $record{"scantron.$item.answer"} = '';
-		}
-
-		my @ans=@array;
-		my $i=0;
-		my $increment = 0;
-		while ($#ans) {
-		    $i+=length($ans[0]) + $increment;
-		    my $line   = int($i/$$scantron_config{'Qlength'} + $first_answer);
-		    my $bubble = $i%$$scantron_config{'Qlength'};
-		    $record{"scantron.$line.answer"}.=$alphabet[$bubble];
-		    shift(@ans);
-		    $increment = 1;
-		}
-		$ansnum += $answers_needed;
-	    }
-	}
+        my @ans=@array;
+        my $i=0;
+        my $increment = 0;
+        while ($#ans) {
+            $i+=length($ans[0]) + $increment;
+            my $line   = int($i/$$scantron_config{'Qlength'} + $ansnum);
+            my $bubble = $i%$$scantron_config{'Qlength'};
+            $record->{"scantron.$line.answer"}.=$alphabet->[$bubble];
+            shift(@ans);
+            $increment = 1;
+        }
+        $ansnum += $answers_needed;
     }
-    $record{'scantron.maxquest'}=$questnum;
-    return \%record;
+    return $ansnum;
 }
 
 =pod
@@ -5718,7 +6052,8 @@ sub scantron_process_corrections {
 		&scantron_fixup_scanline(\%scantron_config,$scan_data,$line,
 					 $which,'answer',
 					 { 'question'=>$question,
-		       'response'=>$env{"form.scantron_correct_Q_$question"}});
+		      		   'response'=>$env{"form.scantron_correct_Q_$question"},
+                                   'questionnum'=>$env{"form.scantron_questionnum_Q_$question"}});
 	    if ($err) { last; }
 	}
     }
@@ -5823,7 +6158,7 @@ sub remember_current_skipped {
 sub check_for_error {
     my ($r,$result)=@_;
     if ($result ne 'ok' && $result ne 'not_found' ) {
-	$r->print("An error occurred ($result) when trying to Remove the existing corrections.");
+	$r->print(&mt("An error occurred ([_1]) when trying to remove the existing corrections.",$result));
     }
 }
 
@@ -5847,25 +6182,25 @@ sub scantron_warning_screen {
 	$CODElist=$env{'form.scantron_CODElist'};
 	if ($env{'form.scantron_CODElist'} eq '') { $CODElist='<span class="LC_warning">None</span>'; }
 	$CODElist=
-	    '<tr><td><b>List of CODES to validate against:</b></td><td><tt>'.
+	    '<tr><td><b>'.&mt('List of CODES to validate against:').'</b></td><td><tt>'.
 	    $env{'form.scantron_CODElist'}.'</tt></td></tr>';
     }
-    return (<<STUFF);
+    return ('
 <p>
-<span class="LC_warning">Please double check the information
-                 below before clicking on '$button_text'</span>
+<span class="LC_warning">
+'.&mt('Please double check the information below before clicking on \'[_1]\'',&mt($button_text)).'</span>
 </p>
 <table>
-<tr><td><b>Sequence to be Graded:</b></td><td>$title</td></tr>
-<tr><td><b>Data File that will be used:</b></td><td><tt>$env{'form.scantron_selectfile'}</tt></td></tr>
-$CODElist
+<tr><td><b>'.&mt('Sequence to be Graded:').'</b></td><td>'.$title.'</td></tr>
+<tr><td><b>'.&mt('Data File that will be used:').'</b></td><td><tt>'.$env{'form.scantron_selectfile'}.'</tt></td></tr>
+'.$CODElist.'
 </table>
 <br />
-<p> If this information is correct, please click on '$button_text'.</p>
-<p> If something is incorrect, please click the 'Grading Menu' button to start over.</p>
+<p> '.&mt('If this information is correct, please click on \'[_1]\'.',&mt($button_text)).'</p>
+<p> '.&mt('If something is incorrect, please click the \'Grading Menu\' button to start over.').'</p>
 
 <br />
-STUFF
+');
 }
 
 =pod
@@ -5886,23 +6221,23 @@ sub scantron_do_warning {
     if ( $env{'form.selectpage'} eq '' ||
 	 $env{'form.scantron_selectfile'} eq '' ||
 	 $env{'form.scantron_format'} eq '' ) {
-	$r->print("<p>You have forgetten to specify some information. Please go Back and try again.</p>");
+	$r->print("<p>".&mt('You have forgetten to specify some information. Please go Back and try again.')."</p>");
 	if ( $env{'form.selectpage'} eq '') {
-	    $r->print('<p><span class="LC_error">You have not selected a Sequence to grade</span></p>');
+	    $r->print('<p><span class="LC_error">'.&mt('You have not selected a Sequence to grade').'</span></p>');
 	} 
 	if ( $env{'form.scantron_selectfile'} eq '') {
-	    $r->print('<p><span class="LC_error">You have not selected a file that contains the student\'s response data.</span></p>');
+	    $r->print('<p><span class="LC_error">'.&mt('You have not selected a file that contains the student\'s response data.').'</span></p>');
 	} 
 	if ( $env{'form.scantron_format'} eq '') {
-	    $r->print('<p><span class="LC_error">You have not selected a the format of the student\'s response data.</span></p>');
+	    $r->print('<p><span class="LC_error">'.&mt('You have not selected a the format of the student\'s response data.').'</span></p>');
 	} 
     } else {
 	my $warning=&scantron_warning_screen('Grading: Validate Records');
-	$r->print(<<STUFF);
-$warning
-<input type="submit" name="submit" value="Grading: Validate Records" />
+	$r->print('
+'.$warning.'
+<input type="submit" name="submit" value="'.&mt('Grading: Validate Records').'" />
 <input type="hidden" name="command" value="scantron_validate" />
-STUFF
+');
     }
     $r->print("</form><br />".&show_grading_menu_form($symb));
     return '';
@@ -5937,6 +6272,10 @@ SCANTRONFORM
 	   '<input type="hidden" name="scantron.bubblelines.'.$line.'" value="'.$env{"form.scantron.bubblelines.$line"}.'" />'."\n";
        $chunk .=
 	   '<input type="hidden" name="scantron.first_bubble_line.'.$line.'" value="'.$env{"form.scantron.first_bubble_line.$line"}.'" />'."\n";
+       $chunk .= 
+           '<input type="hidden" name="scantron.sub_bubblelines.'.$line.'" value="'.$env{"form.scantron.sub_bubblelines.$line"}.'" />'."\n";
+       $chunk .=
+           '<input type="hidden" name="scantron.responsetype.'.$line.'" value="'.$env{"form.scantron.responsetype.$line"}.'" />'."\n";
        $result .= $chunk;
        $line++;
    }
@@ -5981,7 +6320,7 @@ sub scantron_validate_file {
     if ($env{'form.scantron_corrections'}) {
 	&scantron_process_corrections($r);
     }
-    $r->print("<p>Gathering necessary info.</p>");$r->rflush();
+    $r->print('<p>'.&mt('Gathering necessary information.').'</p>');$r->rflush();
     #get the student pick code ready
     $r->print(&Apache::loncommon::studentbrowser_javascript());
     my $max_bubble=&scantron_get_maxbubble();
@@ -6001,7 +6340,7 @@ sub scantron_validate_file {
 
     my $stop=0;
     while (!$stop && $currentphase < scalar(@validate_phases)) {
-	$r->print("<p> Validating ".$validate_phases[$currentphase]."</p>");
+	$r->print(&mt('Validating '.$validate_phases[$currentphase]).'<br />');
 	$r->rflush();
 	my $which="scantron_validate_".$validate_phases[$currentphase];
 	{
@@ -6011,12 +6350,11 @@ sub scantron_validate_file {
     }
     if (!$stop) {
 	my $warning=&scantron_warning_screen('Start Grading');
-	$r->print(<<STUFF);
-Validation process complete.<br />
-$warning
-<input type="submit" name="submit" value="Start Grading" />
+	$r->print(&mt('Validation process complete.').'<br />
+'.$warning.'
+<input type="submit" name="submit" value="'.&mt('Start Grading').'" />
 <input type="hidden" name="command" value="scantron_process" />
-STUFF
+');
 
     } else {
 	$r->print('<input type="hidden" name="command" value="scantron_validate" />');
@@ -6024,15 +6362,19 @@ STUFF
     }
     if ($stop) {
 	if ($validate_phases[$currentphase] eq 'sequence') {
-	    $r->print('<input type="submit" name="submit" value="Ignore -> " />');
-	    $r->print(' this error <br />');
+	    $r->print('<input type="submit" name="submit" value="'.&mt('Ignore -&gt;').' " />');
+	    $r->print(' '.&mt('this error').' <br />');
 
-	    $r->print(" <p>Or click the 'Grading Menu' button to start over.</p>");
+	    $r->print(" <p>".&mt("Or click the 'Grading Menu' button to start over.")."</p>");
 	} else {
-	    $r->print('<input type="submit" name="submit" value="Continue ->" />');
-	    $r->print(' using corrected info <br />');
-	    $r->print("<input type='submit' value='Skip' name='scantron_skip_record' />");
-	    $r->print(" this scanline saving it for later.");
+            if ($validate_phases[$currentphase] eq 'doublebubble' || $validate_phases[$currentphase] eq 'missingbubbles') {
+	        $r->print('<input type="button" name="submitbutton" value="'.&mt('Continue -&gt;').'" onclick="javascript:verify_bubble_radio(this.form)" />');
+            } else {
+                $r->print('<input type="submit" name="submit" value="'.&mt('Continue -&gt;').'" />');
+            }
+	    $r->print(' '.&mt('using corrected info').' <br />');
+	    $r->print("<input type='submit' value='".&mt("Skip")."' name='scantron_skip_record' />");
+	    $r->print(" ".&mt("this scanline saving it for later."));
 	}
     }
     $r->print(" </form><br />".&show_grading_menu_form($symb));
@@ -6093,7 +6435,10 @@ sub scantron_remove_scan_data {
     }
     my $result;
     if (@todelete) {
-	$result=&Apache::lonnet::del('nohist_scantrondata',\@todelete,$cdom,$cname);
+	$result = &Apache::lonnet::del('nohist_scantrondata',
+				       \@todelete,$cdom,$cname);
+    } else {
+	$result = 'ok';
     }
     return $result;
 }
@@ -6403,14 +6748,7 @@ sub scantron_validate_sequence {
     return (0,$currentphase+1);
 }
 
-=pod
-
-=item scantron_validate_ID
 
-   Validates all scanlines in the selected file to not have any
-   invalid or underspecified student IDs
-
-=cut
 
 sub scantron_validate_ID {
     my ($r,$currentphase) = @_;
@@ -6476,67 +6814,43 @@ sub scantron_validate_ID {
     return (0,$currentphase+1);
 }
 
-=pod
-
-=item scantron_get_correction
-
-   Builds the interface screen to interact with the operator to fix a
-   specific error condition in a specific scanline
-
- Arguments:
-    $r           - Apache request object
-    $i           - number of the current scanline
-    $scan_record - hash ref as returned from &scantron_parse_scanline()
-    $scan_config - hash ref as returned from &get_scantron_config()
-    $line        - full contents of the current scanline
-    $error       - error condition, valid values are
-                   'incorrectCODE', 'duplicateCODE',
-                   'doublebubble', 'missingbubble',
-                   'duplicateID', 'incorrectID'
-    $arg         - extra information needed
-       For errors:
-         - duplicateID   - paper number that this studentID was seen before on
-         - duplicateCODE - array ref of the paper numbers this CODE was
-                           seen on before
-         - incorrectCODE - current incorrect CODE 
-         - doublebubble  - array ref of the bubble lines that have double
-                           bubble errors
-         - missingbubble - array ref of the bubble lines that have missing
-                           bubble errors
-
-=cut
 
 sub scantron_get_correction {
     my ($r,$i,$scan_record,$scan_config,$line,$error,$arg)=@_;
-
 #FIXME in the case of a duplicated ID the previous line, probably need
 #to show both the current line and the previous one and allow skipping
 #the previous one or the current one
 
-    $r->print("<p><b>An error was detected ($error)</b>");
     if ( $$scan_record{'scantron.PaperID'} =~ /\S/) {
-	$r->print(" for PaperID <tt>".
-		  $$scan_record{'scantron.PaperID'}."</tt> \n");
+	$r->print("<p>".&mt("<b>An error was detected ($error)</b>".
+			    " for PaperID <tt>[_1]</tt>",
+			    $$scan_record{'scantron.PaperID'})."</p> \n");
     } else {
-	$r->print(" in scanline $i <pre>".
-		  $line."</pre> \n");
-    }
-    my $message="<p>The ID on the form is  <tt>".
-	$$scan_record{'scantron.ID'}."</tt><br />\n".
-	"The name on the paper is ".
-	$$scan_record{'scantron.LastName'}.",".
-	$$scan_record{'scantron.FirstName'}."</p>";
+	$r->print("<p>".&mt("<b>An error was detected ($error)</b>".
+			    " in scanline [_1] <pre>[_2]</pre>",
+			    $i,$line)."</p> \n");
+    }
+    my $message="<p>".&mt("The ID on the form is  <tt>[_1]</tt><br />".
+			  "The name on the paper is [_2],[_3]",
+			  $$scan_record{'scantron.ID'},
+			  $$scan_record{'scantron.LastName'},
+			  $$scan_record{'scantron.FirstName'})."</p>";
 
     $r->print('<input type="hidden" name="scantron_corrections" value="'.$error.'" />'."\n");
     $r->print('<input type="hidden" name="scantron_line" value="'.$i.'" />'."\n");
+                           # Array populated for doublebubble or
+    my @lines_to_correct;  # missingbubble errors to build javascript
+                           # to validate radio button checking   
+
     if ($error =~ /ID$/) {
 	if ($error eq 'incorrectID') {
-	    $r->print("The encoded ID is not in the classlist</p>\n");
+	    $r->print("<p>".&mt("The encoded ID is not in the classlist").
+		      "</p>\n");
 	} elsif ($error eq 'duplicateID') {
-	    $r->print("The encoded ID has also been used by a previous paper $arg</p>\n");
+	    $r->print("<p>".&mt("The encoded ID has also been used by a previous paper [_1]",$arg)."</p>\n");
 	}
 	$r->print($message);
-	$r->print("<p>How should I handle this? <br /> \n");
+	$r->print("<p>".&mt("How should I handle this?")." <br /> \n");
 	$r->print("\n<ul><li> ");
 	#FIXME it would be nice if this sent back the user ID and
 	#could do partial userID matches
@@ -6549,14 +6863,14 @@ sub scantron_get_correction {
 	$r->print('</li>');
     } elsif ($error =~ /CODE$/) {
 	if ($error eq 'incorrectCODE') {
-	    $r->print("</p><p>The encoded CODE is not in the list of possible CODEs</p>\n");
+	    $r->print("<p>".&mt("The encoded CODE is not in the list of possible CODEs.")."</p>\n");
 	} elsif ($error eq 'duplicateCODE') {
-	    $r->print("</p><p>The encoded CODE has also been used by a previous paper ".join(', ',@{$arg}).", and CODEs are supposed to be unique</p>\n");
+	    $r->print("<p>".&mt("The encoded CODE has also been used by a previous paper [_1], and CODEs are supposed to be unique.",join(', ',@{$arg}))."</p>\n");
 	}
-	$r->print("<p>The CODE on the form is  <tt>'".
-		  $$scan_record{'scantron.CODE'}."'</tt><br />\n");
+	$r->print("<p>".&mt("The CODE on the form is  <tt>'[_1]'</tt>",
+			    $$scan_record{'scantron.CODE'})."<br />\n");
 	$r->print($message);
-	$r->print("<p>How should I handle this? <br /> \n");
+	$r->print("<p>".&mt("How should I handle this?")." <br /> \n");
 	$r->print("\n<br /> ");
 	my $i=0;
 	if ($error eq 'incorrectCODE' 
@@ -6566,7 +6880,13 @@ sub scantron_get_correction {
 		foreach my $testcode (@{$closest}) {
 		    my $checked='';
 		    if (!$i) { $checked=' checked="checked" '; }
-		    $r->print("<label><input type='radio' name='scantron_CODE_resolution' value='use_closest_$i' $checked /> Use the similar CODE <b><tt>".$testcode."</tt></b> instead.</label><input type='hidden' name='scantron_CODE_closest_$i' value='$testcode' />");
+		    $r->print("
+   <label>
+       <input type='radio' name='scantron_CODE_resolution' value='use_closest_$i' $checked />
+       ".&mt("Use the similar CODE [_1] instead.",
+	    "<b><tt>".$testcode."</tt></b>")."
+    </label>
+    <input type='hidden' name='scantron_CODE_closest_$i' value='$testcode' />");
 		    $r->print("\n<br />");
 		    $i++;
 		}
@@ -6574,7 +6894,12 @@ sub scantron_get_correction {
 	}
 	if ($$scan_record{'scantron.CODE'}=~/\S/ ) {
 	    my $checked; if (!$i) { $checked=' checked="checked" '; }
-	    $r->print("<label><input type='radio' name='scantron_CODE_resolution' value='use_unfound' $checked /> Use the CODE <b><tt>".$$scan_record{'scantron.CODE'}."</tt></b> that is was on the paper, ignoring the error.</label>");
+	    $r->print("
+    <label>
+        <input type='radio' name='scantron_CODE_resolution' value='use_unfound' $checked />
+       ".&mt("Use the CODE [_1] that is was on the paper, ignoring the error.",
+	     "<b><tt>".$$scan_record{'scantron.CODE'}."</tt></b>")."
+    </label>");
 	    $r->print("\n<br />");
 	}
 
@@ -6596,118 +6921,274 @@ ENDSCRIPT
 	   "&curCODE=".&escape($$scan_record{'scantron.CODE'}).
 	   "&scantron_selectfile=".&escape($env{'form.scantron_selectfile'});
 	if ($env{'form.scantron_CODElist'} =~ /\S/) { 
-	    $r->print("<label><input type='radio' name='scantron_CODE_resolution' value='use_found' /> <a target='_blank' href='$href'>Select</a> a CODE from the list of all CODEs and use it.</label> Selected CODE is <input readonly='true' type='text' size='8' name='scantron_CODE_selectedvalue' onfocus=\"javascript:change_radio('use_found')\" onchange=\"javascript:change_radio('use_found')\" />");
+	    $r->print("
+    <label>
+       <input type='radio' name='scantron_CODE_resolution' value='use_found' />
+       ".&mt("[_1]Select[_2] a CODE from the list of all CODEs and use it.",
+	     "<a target='_blank' href='$href'>","</a>")."
+    </label> 
+    ".&mt("Selected CODE is [_1]","<input readonly='true' type='text' size='8' name='scantron_CODE_selectedvalue' onfocus=\"javascript:change_radio('use_found')\" onchange=\"javascript:change_radio('use_found')\" />"));
 	    $r->print("\n<br />");
 	}
-	$r->print("<label><input type='radio' name='scantron_CODE_resolution' value='use_typed' /> Use </label><input type='text' size='8' name='scantron_CODE_newvalue' onfocus=\"javascript:change_radio('use_typed')\" onkeypress=\"javascript:change_radio('use_typed')\" /> as the CODE.");
+	$r->print("
+    <label>
+       <input type='radio' name='scantron_CODE_resolution' value='use_typed' />
+       ".&mt("Use [_1] as the CODE.",
+	     "</label><input type='text' size='8' name='scantron_CODE_newvalue' onfocus=\"javascript:change_radio('use_typed')\" onkeypress=\"javascript:change_radio('use_typed')\" />"));
 	$r->print("\n<br /><br />");
     } elsif ($error eq 'doublebubble') {
-	$r->print("<p>There have been multiple bubbles scanned for a some question(s)</p>\n");
+	$r->print("<p>".&mt("There have been multiple bubbles scanned for some question(s)")."</p>\n");
+
+	# The form field scantron_questions is acutally a list of line numbers.
+	# represented by this form so:
+
+	my $line_list = &questions_to_line_list($arg);
+
 	$r->print('<input type="hidden" name="scantron_questions" value="'.
-		  join(',',@{$arg}).'" />');
+		  $line_list.'" />');
 	$r->print($message);
-	$r->print("<p>Please indicate which bubble should be used for grading</p>");
+	$r->print("<p>".&mt("Please indicate which bubble should be used for grading")."</p>");
 	foreach my $question (@{$arg}) {
-	    my $selected  = &get_response_bubbles($scan_record, $question);
-	    my @select_array = split(/:/,$selected);
-	    &scantron_bubble_selector($r,$scan_config,$question,
-				      @select_array);
+	    my @linenums = &prompt_for_corrections($r,$question,$scan_config,
+                                                   $scan_record, $error);
+            push(@lines_to_correct,@linenums);
 	}
+        $r->print(&verify_bubbles_checked(@lines_to_correct));
     } elsif ($error eq 'missingbubble') {
-	$r->print("<p>There have been <b>no</b> bubbles scanned for some question(s)</p>\n");
+	$r->print("<p>".&mt("There have been <b>no</b> bubbles scanned for some question(s)")."</p>\n");
 	$r->print($message);
-	$r->print("<p>Please indicate which bubble should be used for grading</p>");
-	$r->print("Some questions have no scanned bubbles\n");
+	$r->print("<p>".&mt("Please indicate which bubble should be used for grading.")."</p>");
+	$r->print(&mt("Some questions have no scanned bubbles.")."\n");
+
+	# The form field scantron_questions is actually a list of line numbers not
+	# a list of question numbers. Therefore:
+	#
+	
+	my $line_list = &questions_to_line_list($arg);
+
 	$r->print('<input type="hidden" name="scantron_questions" value="'.
-		  join(',',@{$arg}).'" />');
+		  $line_list.'" />');
 	foreach my $question (@{$arg}) {
-	    my $selected = &get_response_bubbles($scan_record, $question);
-	    my @select_array = split(/:/,$selected); # ought to be an array of empties.
-	    &scantron_bubble_selector($r,$scan_config,$question, @select_array);
+	    my @linenums = &prompt_for_corrections($r,$question,$scan_config,
+                                                   $scan_record, $error);
+            push(@lines_to_correct,@linenums);
 	}
+        $r->print(&verify_bubbles_checked(@lines_to_correct));
     } else {
 	$r->print("\n<ul>");
     }
     $r->print("\n</li></ul>");
+}
 
+sub verify_bubbles_checked {
+    my (@ansnums) = @_;
+    my $ansnumstr = join('","',@ansnums);
+    my $warning = &mt("A bubble or 'No bubble' selection has not been made for one or more lines.");
+    my $output = (<<ENDSCRIPT);
+<script type="text/javascript">
+function verify_bubble_radio(form) {
+    var ansnumArray = new Array ("$ansnumstr");
+    var need_bubble_count = 0;
+    for (var i=0; i<ansnumArray.length; i++) {
+        if (form.elements["scantron_correct_Q_"+ansnumArray[i]].length > 1) {
+            var bubble_picked = 0; 
+            for (var j=0; j<form.elements["scantron_correct_Q_"+ansnumArray[i]].length; j++) {
+                if (form.elements["scantron_correct_Q_"+ansnumArray[i]][j].checked == true) {
+                    bubble_picked = 1;
+                }
+            }
+            if (bubble_picked == 0) {
+                need_bubble_count ++;
+            }
+        }
+    }
+    if (need_bubble_count) {
+        alert("$warning");
+        return;
+    }
+    form.submit(); 
+}
+</script>
+ENDSCRIPT
+    return $output;
 }
 
 =pod
 
-=item scantron_bubble_selector
-  
-   Generates the html radiobuttons to correct a single bubble line
-   possibly showing the existing the selected bubbles if known
+=item  questions_to_line_list
 
- Arguments:
-    $r           - Apache request object
-    $scan_config - hash from &get_scantron_config()
-    $quest       - number of the bubble line to make a corrector for
-    @lines       - array of answer lines.
+Converts a list of questions into a string of comma separated
+line numbers in the answer sheet used by the questions.  This is
+used to fill in the scantron_questions form field.
 
-=cut
+  Arguments:
+     questions    - Reference to an array of questions.
 
-sub scantron_bubble_selector {
-    my ($r,$scan_config,$quest,@lines)=@_;
-    my $max=$$scan_config{'Qlength'};
+=cut
 
 
-    my $scmode=$$scan_config{'Qon'};
+sub questions_to_line_list {
+    my ($questions) = @_;
+    my @lines;
+
+    foreach my $item (@{$questions}) {
+        my $question = $item;
+        my ($first,$count,$last);
+        if ($item =~ /^(\d+)\.(\d+)$/) {
+            $question = $1;
+            my $subquestion = $2;
+            $first = $first_bubble_line{$question-1} + 1;
+            my @subans = split(/,/,$subdivided_bubble_lines{$question-1});
+            my $subcount = 1;
+            while ($subcount<$subquestion) {
+                $first += $subans[$subcount-1];
+                $subcount ++;
+            }
+            $count = $subans[$subquestion-1];
+        } else {
+	    $first   = $first_bubble_line{$question-1} + 1;
+	    $count   = $bubble_lines_per_response{$question-1};
+        }
+        $last = $first+$count-1;
+        push(@lines, ($first..$last));
+    }
+    return join(',', @lines);
+}
 
-    my $bubble_length = scalar(@lines);
+=pod 
 
+=item prompt_for_corrections
 
-    if ($scmode eq 'number' || $scmode eq 'letter') { $max=10; }	     
+Prompts for a potentially multiline correction to the
+user's bubbling (factors out common code from scantron_get_correction
+for multi and missing bubble cases).
 
-    my $response = $quest-1;
-    my $lines = $bubble_lines_per_response{$response};
+ Arguments:
+   $r           - Apache request object.
+   $question    - The question number to prompt for.
+   $scan_config - The scantron file configuration hash.
+   $scan_record - Reference to the hash that has the the parsed scanlines.
+   $error       - Type of error
+
+ Implicit inputs:
+   %bubble_lines_per_response   - Starting line numbers for each question.
+                                  Numbered from 0 (but question numbers are from
+                                  1.
+   %first_bubble_line           - Starting bubble line for each question.
+   %subdivided_bubble_lines     - optionresponse, matchresponse and rankresponse 
+                                  type problems render as separate sub-questions, 
+                                  in exam mode. This hash contains a 
+                                  comma-separated list of the lines per 
+                                  sub-question.
+   %responsetype_per_response   - essayresponse, formularesponse,
+                                  stringresponse, imageresponse, reactionresponse,
+                                  and organicresponse type problem parts can have
+                                  multiple lines per response if the weight
+                                  assigned exceeds 10.  In this case, only
+                                  one bubble per line is permitted, but more 
+                                  than one line might contain bubbles, e.g.
+                                  bubbling of: line 1 - J, line 2 - J, 
+                                  line 3 - B would assign 22 points.  
 
-    my $total_lines = $lines*2;
-    my @alphabet=('A'..'Z');
+=cut
 
-    $r->print("<table border='1'><tr><td rowspan='".$total_lines."'>$quest</td>");
+sub prompt_for_corrections {
+    my ($r, $question, $scan_config, $scan_record, $error) = @_;
+    my ($current_line,$lines);
+    my @linenums;
+    my $questionnum = $question;
+    if ($question =~ /^(\d+)\.(\d+)$/) {
+        $question = $1;
+        $current_line = $first_bubble_line{$question-1} + 1 ;
+        my $subquestion = $2;
+        my @subans = split(/,/,$subdivided_bubble_lines{$question-1});
+        my $subcount = 1;
+        while ($subcount<$subquestion) {
+            $current_line += $subans[$subcount-1];
+            $subcount ++;
+        }
+        $lines = $subans[$subquestion-1];
+    } else {
+        $current_line = $first_bubble_line{$question-1} + 1 ;
+        $lines        = $bubble_lines_per_response{$question-1};
+    }
+    if ($lines > 1) {
+        $r->print(&mt('The group of bubble lines below responds to a single question.').'<br />');
+        if (($responsetype_per_response{$question-1} eq 'essayresponse') ||
+            ($responsetype_per_response{$question-1} eq 'formularesponse') ||
+            ($responsetype_per_response{$question-1} eq 'stringresponse') ||
+            ($responsetype_per_response{$question-1} eq 'imageresponse') ||
+            ($responsetype_per_response{$question-1} eq 'reactionresponse') ||
+            ($responsetype_per_response{$question-1} eq 'organicresponse')) {
+            $r->print(&mt("Although this particular question type requires handgrading, the instructions for this question in the exam directed students to leave [quant,_1,line] blank on their scantron sheets.",$lines).'<br /><br />'.&mt('A non-zero score can be assigned to the student during scantron grading by selecting a bubble in at least one line.').'<br />'.&mt('The score for this question will be a sum of the numeric values for the selected bubbles from each line, where A=1 point, B=2 points etc.').'<br />'.&mt("To assign a score of zero for this question, mark all lines as 'No bubble'.").'<br /><br />');
+        } else {
+            $r->print(&mt("Select at most one bubble in a single line and select 'No Bubble' in all the other lines. ")."<br />");
+        }
+    }
+    for (my $i =0; $i < $lines; $i++) {
+        my $selected = $$scan_record{"scantron.$current_line.answer"};
+	&scantron_bubble_selector($r,$scan_config,$current_line, 
+	        		  $questionnum,$error,split('', $selected));
+        push(@linenums,$current_line);
+	$current_line++;
+    }
+    if ($lines > 1) {
+	$r->print("<hr /><br />");
+    }
+    return @linenums;
+}
 
-    for (my $l = 0; $l < $lines; $l++) {
-	if ($l != 0) {
-	    $r->print('<tr>');
-	}
-	my @selected = split(//,$lines[$l]);
-	for (my $i=0;$i<$max;$i++) {
-	    $r->print("\n".'<td align="center">');
-	    if ($selected[0] eq $alphabet[$i]) { 
-		$r->print('X'); 
-		shift(@selected) ;
-	    } else { 
-		$r->print('&nbsp;'); 
-	    }
-	    $r->print('</td>');
-	    
-	}
+=pod
 
-	if ($l == 0) {
-	    my $lspan = $total_lines * 2;   #  2 table rows per bubble line.
+=item scantron_bubble_selector
+  
+   Generates the html radiobuttons to correct a single bubble line
+   possibly showing the existing the selected bubbles if known
 
-	    $r->print('<td rowspan='.$lspan.'><label><input type="radio" name="scantron_correct_Q_'.
-	      $quest.'" value="none" /> No bubble </label></td>');
-	
-	}
+ Arguments:
+    $r           - Apache request object
+    $scan_config - hash from &get_scantron_config()
+    $line        - Number of the line being displayed.
+    $questionnum - Question number (may include subquestion)
+    $error       - Type of error.
+    @selected    - Array of bubbles picked on this line.
 
-	$r->print('</tr><tr>');
+=cut
 
-	# FIXME: This may have to be a bit more clever for
-	#        multiline questions (different values e.g..).
+sub scantron_bubble_selector {
+    my ($r,$scan_config,$line,$questionnum,$error,@selected)=@_;
+    my $max=$$scan_config{'Qlength'};
 
-	for (my $i=0;$i<$max;$i++) {
-	    my $value = "$l:$i";	# Relative bubble line #: Bubble in line.
-	    $r->print("\n".
-		      '<td><label><input type="radio" name="scantron_correct_Q_'.
-		      $quest.'" value="'.$value.'" />'.$alphabet[$i]."</label></td>");
-	}
-	$r->print('</tr>');
+    my $scmode=$$scan_config{'Qon'};
+    if ($scmode eq 'number' || $scmode eq 'letter') { $max=10; }	     
 
-	    
-    }
-    $r->print('</table>');
+    my @alphabet=('A'..'Z');
+    $r->print(&Apache::loncommon::start_data_table().
+              &Apache::loncommon::start_data_table_row());
+    $r->print('<td rowspan="2" class="LC_leftcol_header">'.$line.'</td>');
+    for (my $i=0;$i<$max+1;$i++) {
+	$r->print("\n".'<td align="center">');
+	if ($selected[0] eq $alphabet[$i]) { $r->print('X'); shift(@selected) }
+	else { $r->print('&nbsp;'); }
+	$r->print('</td>');
+    }
+    $r->print(&Apache::loncommon::end_data_table_row().
+              &Apache::loncommon::start_data_table_row());
+    for (my $i=0;$i<$max;$i++) {
+	$r->print("\n".
+		  '<td><label><input type="radio" name="scantron_correct_Q_'.
+		  $line.'" value="'.$i.'" />'.$alphabet[$i]."</label></td>");
+    }
+    my $nobub_checked = ' ';
+    if ($error eq 'missingbubble') {
+        $nobub_checked = ' checked = "checked" ';
+    }
+    $r->print("\n".'<td><label><input type="radio" name="scantron_correct_Q_'.
+	      $line.'" value="none"'.$nobub_checked.'/>'.&mt('No bubble').
+              '</label>'."\n".'<input type="hidden" name="scantron_questionnum_Q_'.
+              $line.'" value="'.$questionnum.'" /></td>');
+    $r->print(&Apache::loncommon::end_data_table_row().
+              &Apache::loncommon::end_data_table());
 }
 
 =pod
@@ -6864,7 +7345,7 @@ sub scantron_validate_CODE {
 				     $line,'duplicateCODE',$usedCODEs{$CODE});
 	    return(1,$currentphase);
 	}
-	push (@{$usedCODEs{$CODE}},$$scan_record{'scantron.PaperID'});
+	push(@{$usedCODEs{$CODE}},$$scan_record{'scantron.PaperID'});
     }
     return (0,$currentphase+1);
 }
@@ -6887,7 +7368,6 @@ sub scantron_validate_doublebubble {
     #get scantron line setup
     my %scantron_config=&get_scantron_config($env{'form.scantron_format'});
     my ($scanlines,$scan_data)=&scantron_getfile();
-
     &scantron_get_maxbubble();	# parse needs the bubble line array.
 
     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
@@ -6904,24 +7384,8 @@ sub scantron_validate_doublebubble {
     return (0,$currentphase+1);
 }
 
-=pod
-
-=item scantron_get_maxbubble
 
-   Returns the maximum number of bubble lines that are expected to
-   occur. Does this by walking the selected sequence rendering the
-   resource and then checking &Apache::lonxml::get_problem_counter()
-   for what the current value of the problem counter is.
-
-   Caches the results to $env{'form.scantron_maxbubble'},
-   $env{'form.scantron.bubble_lines.n'} and 
-   $env{'form.scantron.first_bubble_line.n'}
-   which are the total number of bubble, lines, the number of bubble
-   lines for reponse n and number of the first bubble line for response n.
-
-=cut
-
-sub scantron_get_maxbubble {    
+sub scantron_get_maxbubble {
     if (defined($env{'form.scantron_maxbubble'}) &&
 	$env{'form.scantron_maxbubble'}) {
 	&restore_bubble_lines();
@@ -6943,36 +7407,110 @@ sub scantron_get_maxbubble {
     my $total_lines = 0;
     %bubble_lines_per_response = ();
     %first_bubble_line         = ();
-
+    %subdivided_bubble_lines   = ();
+    %responsetype_per_response = ();
   
     my $response_number = 0;
     my $bubble_line     = 0;
     foreach my $resource (@resources) {
-	my $symb = $resource->symb();
-	&Apache::lonxml::clear_bubble_lines_for_part();
-	my $result=&Apache::lonnet::ssi($resource->src(),
-					('symb' => $resource->symb()),
-					('grade_target' => 'analyze'),
-					('grade_courseid' => $cid),
-					('grade_domain' => $udom),
-					('grade_username' => $uname));
-	my (undef, $an) =
-	    split(/_HASH_REF__/,$result, 2);
+        my $symb = $resource->symb();
 
-	my %analysis = &Apache::lonnet::str2hash($an);
+        my (@parts,@allparts,@possible_parts);
 
+        # Need to retrieve part IDs and response IDs because essayresponse,
+        # reactionresponse and organicresponse items are not included in 
+        # $analysis{'parts'} from lonnet::ssi.  
+        if (ref($resource->parts()) eq 'ARRAY') {
+            foreach my $part (@{$resource->parts()}) {
+                if (!&Apache::loncommon::check_if_partid_hidden($part,$symb,$udom,$uname)) {
+                    my @resp_ids = $resource->responseIds($part);
+                    foreach my $id (@resp_ids) {
+                        my $part_id = $part.'.'.$id;
+                        push(@possible_parts,$part_id);
+                    }
+                }
+            }
+        }
 
+        my $result=&ssi_with_retries($resource->src(), $ssi_retries,
+                                        ('symb' => $symb,
+                                         'grade_target' => 'analyze',
+                                         'grade_courseid' => $cid,
+                                         'grade_domain' => $udom,
+                                         'grade_username' => $uname));
+        my (undef, $an) =
+            split(/_HASH_REF__/,$result, 2);
 
-	foreach my $part_id (@{$analysis{'parts'}}) {
+	my %analysis = &Apache::lonnet::str2hash($an);
 
+        if (ref($analysis{'parts'}) eq 'ARRAY') {
+            foreach my $part (@{$analysis{'parts'}}) {
+                my ($id,$respid) = split(/\./,$part);
+                if (!&Apache::loncommon::check_if_partid_hidden($id,$symb,$udom,$uname)) {
+                    push(@parts,$part);
+                }
+            }
+        }
+        # Add part_ids for any essayresponse, reactionresponse or 
+        # organicresponse items. 
+        foreach my $part_id (@possible_parts) {
+            if (grep(/^\Q$part_id\E$/,@parts)) {
+                push(@allparts,$part_id);
+            } else {
+                if (($analysis{$part_id.'.type'} eq 'essayresponse') ||
+                    ($analysis{$part_id.'.type'} eq 'reactionresponse') ||
+                    ($analysis{$part_id.'.type'} eq 'organicresponse')) {
+                    push(@allparts,$part_id);
+                }
+            }
+        }
 
-	    my $lines = $analysis{"$part_id.bubble_lines"};;
+	foreach my $part_id (@allparts) {
+            my $lines;
 
 	    # TODO - make this a persistent hash not an array.
 
+            # optionresponse, matchresponse and rankresponse type items 
+            # render as separate sub-questions in exam mode.
+            if (($analysis{$part_id.'.type'} eq 'optionresponse') ||
+                ($analysis{$part_id.'.type'} eq 'matchresponse') ||
+                ($analysis{$part_id.'.type'} eq 'rankresponse')) {
+                my ($numbub,$numshown);
+                if ($analysis{$part_id.'.type'} eq 'optionresponse') {
+                    if (ref($analysis{$part_id.'.options'}) eq 'ARRAY') {
+                        $numbub = scalar(@{$analysis{$part_id.'.options'}});
+                    }
+                } elsif ($analysis{$part_id.'.type'} eq 'matchresponse') {
+                    if (ref($analysis{$part_id.'.items'}) eq 'ARRAY') {
+                        $numbub = scalar(@{$analysis{$part_id.'.items'}});
+                    }
+                } elsif ($analysis{$part_id.'.type'} eq 'rankresponse') {
+                    if (ref($analysis{$part_id.'.foils'}) eq 'ARRAY') {
+                        $numbub = scalar(@{$analysis{$part_id.'.foils'}});
+                    }
+                }
+                if (ref($analysis{$part_id.'.shown'}) eq 'ARRAY') {
+                    $numshown = scalar(@{$analysis{$part_id.'.shown'}});
+                }
+                my $bubbles_per_line = 10;
+                my $inner_bubble_lines = int($numbub/$bubbles_per_line);
+                if (($numbub % $bubbles_per_line) != 0) {
+                    $inner_bubble_lines++;
+                }
+                for (my $i=0; $i<$numshown; $i++) {
+                    $subdivided_bubble_lines{$response_number} .= 
+                        $inner_bubble_lines.',';
+                }
+                $subdivided_bubble_lines{$response_number} =~ s/,$//;
+                $lines = $numshown * $inner_bubble_lines;
+            } else {
+                $lines = $analysis{"$part_id.bubble_lines"};
+            } 
 
-	    $first_bubble_line{$response_number}           = $bubble_line;
-	    $bubble_lines_per_response{$response_number}   = $lines;
+            $first_bubble_line{$response_number} = $bubble_line;
+	    $bubble_lines_per_response{$response_number} = $lines;
+            $responsetype_per_response{$response_number} = 
+                $analysis{$part_id.'.type'};
 	    $response_number++;
 
 	    $bubble_line +=  $lines;
@@ -6988,15 +7526,6 @@ sub scantron_get_maxbubble {
     return $env{'form.scantron_maxbubble'};
 }
 
-=pod
-
-=item scantron_validate_missingbubbles
-
-   Validates all scanlines in the selected file to not have any
-    answers that don't have bubbles that have not been verified
-    to be bubble free.
-
-=cut
 
 sub scantron_validate_missingbubbles {
     my ($r,$currentphase) = @_;
@@ -7020,7 +7549,25 @@ sub scantron_validate_missingbubbles {
 	# Probably here's where the error is...
 
 	foreach my $missing (@{$$scan_record{'scantron.missingerror'}}) {
-	    if ($missing > $max_bubble) { next; }
+            my $lastbubble;
+            if ($missing =~ /^(\d+)\.(\d+)$/) {
+               my $question = $1;
+               my $subquestion = $2;
+               if (!defined($first_bubble_line{$question -1})) { next; }
+               my $first = $first_bubble_line{$question-1};
+               my @subans = split(/,/,$subdivided_bubble_lines{$question-1});
+               my $subcount = 1;
+               while ($subcount<$subquestion) {
+                   $first += $subans[$subcount-1];
+                   $subcount ++;
+               }
+               my $count = $subans[$subquestion-1];
+               $lastbubble = $first + $count;
+            } else {
+                if (!defined($first_bubble_line{$missing - 1})) { next; }
+                $lastbubble = $first_bubble_line{$missing - 1} + $bubble_lines_per_response{$missing - 1};
+            }
+            if ($lastbubble > $max_bubble) { next; }
 	    push(@to_correct,$missing);
 	}
 	if (@to_correct) {
@@ -7033,35 +7580,15 @@ sub scantron_validate_missingbubbles {
     return (0,$currentphase+1);
 }
 
-=pod
-
-=item scantron_process_students
-
-   Routine that does the actual grading of the bubble sheet information.
-
-   The parsed scanline hash is added to %env 
-
-   Then foreach unskipped scanline it does an &Apache::lonnet::ssi()
-   foreach resource , with the form data of
-
-	'submitted'     =>'scantron' 
-	'grade_target'  =>'grade',
-	'grade_username'=> username of student
-	'grade_domain'  => domain of student
-	'grade_courseid'=> of course
-	'grade_symb'    => symb of resource to grade
-
-    This triggers a grading pass. The problem grading code takes care
-    of converting the bubbled letter information (now in %env) into a
-    valid submission.
-
-=cut
 
 sub scantron_process_students {
     my ($r) = @_;
+
     my (undef,undef,$sequence)=&Apache::lonnet::decode_symb($env{'form.selectpage'});
     my ($symb)=&get_symb($r);
-    if (!$symb) {return '';}
+    if (!$symb) {
+	return '';
+    }
     my $default_form_data=&defaultFormData($symb);
 
     my %scantron_config=&get_scantron_config($env{'form.scantron_format'});
@@ -7082,6 +7609,7 @@ SCANTRONFORM
     my @delayqueue;
     my %completedstudents;
     
+    my $lock=&Apache::lonnet::set_lock(&mt('Grading bubblesheet exam'));
     my $count=&get_todo_count($scanlines,$scan_data);
     my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Scantron Status',
  				    'Scantron Progress',$count,
@@ -7093,6 +7621,18 @@ SCANTRONFORM
     my ($uname,$udom,$started);
 
     &scantron_get_maxbubble();	# Need the bubble lines array to parse.
+    
+
+    # If an ssi failed in scantron_get_maxbubble, put an error message out to
+    # the user and return.
+
+    if ($ssi_error) {
+	$r->print("</form>");
+	&ssi_print_error($r);
+	$r->print(&show_grading_menu_form($symb));
+        &Apache::lonnet::remove_lock($lock);
+	return '';		# Dunno why the other returns return '' rather than just returning.
+    }
 
     while ($i<$scanlines->{'count'}) {
  	($uname,$udom)=('','');
@@ -7120,7 +7660,7 @@ SCANTRONFORM
   	($uname,$udom)=split(/:/,$uname);
 
 	&Apache::lonxml::clear_problem_counter();
-  	&Apache::lonnet::appenv(%$scan_record);
+  	&Apache::lonnet::appenv($scan_record);
 
 	if (&scantron_clear_skip($scanlines,$scan_data,$i)) {
 	    &scantron_putfile($scanlines,$scan_data);
@@ -7141,10 +7681,17 @@ SCANTRONFORM
 		$form{'CODE'}=$scan_record->{'scantron.CODE'};
 	    } else {
 		$form{'CODE'}='';
+	    } 
+	    my $result=&ssi_with_retries($resource->src(), $ssi_retries, %form);
+	    if ($ssi_error) {
+		$ssi_error = 0;	# So end of handler error message does not trigger.
+		$r->print("</form>");
+		&ssi_print_error($r);
+		$r->print(&show_grading_menu_form($symb));
+                &Apache::lonnet::remove_lock($lock);
+		return '';	# Why return ''?  Beats me.
 	    }
-	    my $result=&Apache::lonnet::ssi($resource->src(),%form);
-	    if ($result ne '') {
-	    }
+
 	    if (&Apache::loncommon::connection_aborted($r)) { last; }
 	}
 	$completedstudents{$uname}={'line'=>$line};
@@ -7154,6 +7701,7 @@ SCANTRONFORM
 	&Apache::lonnet::delenv('scantron\.');
     }
     &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
+    &Apache::lonnet::remove_lock($lock);
 #    my $lasttime = &Time::HiRes::time()-$start;
 #    $r->print("<p>took $lasttime</p>");
 
@@ -7162,14 +7710,6 @@ SCANTRONFORM
     return '';
 }
 
-=pod
-
-=item scantron_upload_scantron_data
-
-    Creates the screen for adding a new bubble sheet data file to a course.
-
-=cut
-
 sub scantron_upload_scantron_data {
     my ($r)=@_;
     $r->print(&Apache::loncommon::coursebrowser_javascript($env{'request.role.domain'}));
@@ -7179,7 +7719,7 @@ sub scantron_upload_scantron_data {
     my $domsel=&Apache::loncommon::select_dom_form($env{'request.role.domain'},
 						   'domainid');
     my $default_form_data=&defaultFormData(&get_symb($r,1));
-    $r->print(<<UPLOAD);
+    $r->print('
 <script type="text/javascript" language="javascript">
     function checkUpload(formname) {
 	if (formname.upfile.value == "") {
@@ -7190,30 +7730,26 @@ sub scantron_upload_scantron_data {
     }
 </script>
 
-<form enctype='multipart/form-data' action='/adm/grades' name='rules' method='post'>
-$default_form_data
+<form enctype="multipart/form-data" action="/adm/grades" name="rules" method="post">
+'.$default_form_data.'
 <table>
-<tr><td>$select_link </td></tr>
-<tr><td>Course ID:   </td><td><input name='courseid' type='text' />  </td></tr>
-<tr><td>Course Name: </td><td><input name='coursename' type='text' /></td></tr>
-<tr><td>Domain:      </td><td>$domsel                                </td></tr>
-<tr><td>File to upload:</td><td><input type="file" name="upfile" size="50" /></td></tr>
+<tr><td>'.$select_link.'                             </td></tr>
+<tr><td>'.&mt('Course ID:').'     </td>
+    <td><input name="courseid"   type="text" />      </td></tr>
+<tr><td>'.&mt('Course Name:').'   </td>
+    <td><input name="coursename" type="text" />      </td></tr>
+<tr><td>'.&mt('Domain:').'        </td>
+    <td>'.$domsel.'                                  </td></tr>
+<tr><td>'.&mt('File to upload:').'</td>
+    <td><input type="file" name="upfile" size="50" /></td></tr>
 </table>
-<input name='command' value='scantronupload_save' type='hidden' />
-<input type="button" onClick="javascript:checkUpload(this.form);" value="Upload Scantron Data" />
+<input name="command" value="scantronupload_save" type="hidden" />
+<input type="button" onClick="javascript:checkUpload(this.form);" value="'.&mt('Upload Scantron Data').'" />
 </form>
-UPLOAD
+');
     return '';
 }
 
-=pod
-
-=item scantron_upload_scantron_data_save
-
-   Adds a provided bubble information data file to the course if user
-   has the correct privileges to do so.  
-
-=cut
 
 sub scantron_upload_scantron_data_save {
     my($r)=@_;
@@ -7221,12 +7757,12 @@ sub scantron_upload_scantron_data_save {
     my $doanotherupload=
 	'<br /><form action="/adm/grades" method="post">'."\n".
 	'<input type="hidden" name="command" value="scantronupload" />'."\n".
-	'<input type="submit" name="submit" value="Do Another Upload" />'."\n".
+	'<input type="submit" name="submit" value="'.&mt('Do Another Upload').'" />'."\n".
 	'</form>'."\n";
     if (!&Apache::lonnet::allowed('usc',$env{'form.domainid'}) &&
 	!&Apache::lonnet::allowed('usc',
 			    $env{'form.domainid'}.'_'.$env{'form.courseid'})) {
-	$r->print("You are not allowed to upload Scantron data to the requested course.<br />");
+	$r->print(&mt("You are not allowed to upload Scantron data to the requested course.")."<br />");
 	if ($symb) {
 	    $r->print(&show_grading_menu_form($symb));
 	} else {
@@ -7235,7 +7771,7 @@ sub scantron_upload_scantron_data_save {
 	return '';
     }
     my %coursedata=&Apache::lonnet::coursedescription($env{'form.domainid'}.'_'.$env{'form.courseid'});
-    $r->print("Doing upload to ".$coursedata{'description'}." <br />");
+    $r->print(&mt("Doing upload to [_1]",$coursedata{'description'})." <br />");
     my $fname=$env{'form.upfile.filename'};
     #FIXME
     #copied from lonnet::userfileupload()
@@ -7253,13 +7789,18 @@ sub scantron_upload_scantron_data_save {
     my $uploadedfile=$fname;
     $fname='scantron_orig_'.$fname;
     if (length($env{'form.upfile'}) < 2) {
-	$r->print("<span class=\"LC_error\">Error:</span> The file you attempted to upload, <tt>".&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"')."</tt>, contained no information. Please check that you entered the correct filename.");
+	$r->print(&mt("<span class=\"LC_error\">Error:</span> The file you attempted to upload, [_1]  contained no information. Please check that you entered the correct filename.",'<span class="LC_filename">'.&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"')."</span>"));
     } else {
 	my $result=&Apache::lonnet::finishuserfileupload($env{'form.courseid'},$env{'form.domainid'},'upfile',$fname);
 	if ($result =~ m|^/uploaded/|) {
-	    $r->print("<span class=\"LC_success\">Success:</span> Successfully uploaded ".(length($env{'form.upfile'})-1)." bytes of data into location <tt>".$result."</tt>");
+	    $r->print(&mt("<span class=\"LC_success\">Success:</span> Successfully uploaded [_1] bytes of data into location [_2]",
+			  (length($env{'form.upfile'})-1),
+			  '<span class="LC_filename">'.$result."</span>"));
 	} else {
-	    $r->print("<span class=\"LC_error\">Error:</span> An error (".$result.") occurred when attempting to upload the file, <tt>".&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"')."</tt>");
+	    $r->print(&mt("<span class=\"LC_error\">Error:</span> An error ([_1]) occurred when attempting to upload the file, [_2]",
+			  $result,
+			  '<span class="LC_filename">'.&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"')."</span>"));
+
 	}
     }
     if ($symb) {
@@ -7270,14 +7811,6 @@ sub scantron_upload_scantron_data_save {
     return '';
 }
 
-=pod
-
-=item valid_file
-
-   Validates that the requested bubble data file exists in the course.
-
-=cut
-
 sub valid_file {
     my ($requested_file)=@_;
     foreach my $filename (sort(&scantron_filenames())) {
@@ -7286,16 +7819,6 @@ sub valid_file {
     return 0;
 }
 
-=pod
-
-=item scantron_download_scantron_data
-
-   Shows a list of the three internal files (original, corrected,
-   skipped) for a specific bubble sheet data file that exists in the
-   course.
-
-=cut
-
 sub scantron_download_scantron_data {
     my ($r)=@_;
     my $default_form_data=&defaultFormData(&get_symb($r,1));
@@ -7303,11 +7826,11 @@ sub scantron_download_scantron_data {
     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
     my $file=$env{'form.scantron_selectfile'};
     if (! &valid_file($file)) {
-	$r->print(<<ERROR);
+	$r->print('
 	<p>
-	    The requested file name was invalid.
+	    '.&mt('The requested file name was invalid.').'
         </p>
-ERROR
+');
 	$r->print(&show_grading_menu_form(&get_symb($r,1)));
 	return;
     }
@@ -7317,26 +7840,289 @@ ERROR
     &Apache::lonnet::allowuploaded('/adm/grades',$orig);
     &Apache::lonnet::allowuploaded('/adm/grades',$corrected);
     &Apache::lonnet::allowuploaded('/adm/grades',$skipped);
-    $r->print(<<DOWNLOAD);
+    $r->print('
     <p>
-	<a href="$orig">Original</a> file as uploaded by the scantron office.
+	'.&mt('[_1]Original[_2] file as uploaded by the scantron office.',
+	      '<a href="'.$orig.'">','</a>').'
     </p>
     <p>
-	<a href="$corrected">Corrections</a>, a file of corrected records that were used in grading.
+	'.&mt('[_1]Corrections[_2], a file of corrected records that were used in grading.',
+	      '<a href="'.$corrected.'">','</a>').'
     </p>
     <p>
-	<a href="$skipped">Skipped</a>, a file of records that were skipped.
+	'.&mt('[_1]Skipped[_2], a file of records that were skipped.',
+	      '<a href="'.$skipped.'">','</a>').'
     </p>
-DOWNLOAD
+');
     $r->print(&show_grading_menu_form(&get_symb($r,1)));
     return '';
 }
 
-=pod
+sub checkscantron_results {
+    my ($r) = @_;
+    my ($symb)=&get_symb($r);
+    if (!$symb) {return '';}
+    my $grading_menu_button=&show_grading_menu_form($symb);
+    my $cid = $env{'request.course.id'};
+    my %lettdig = (
+                    A => 1,
+                    B => 2,
+                    C => 3,
+                    D => 4,
+                    E => 5,
+                    F => 6,
+                    G => 7,
+                    H => 8,
+                    I => 9,
+                    J => 0,
+                  );
+    my $numletts = scalar(keys(%lettdig));
+    my $cnum = $env{'course.'.$cid.'.num'};
+    my $cdom = $env{'course.'.$cid.'.domain'};
+    my (undef, undef, $sequence) = &Apache::lonnet::decode_symb($env{'form.selectpage'});
+    my %record;
+    my %scantron_config =
+        &Apache::grades::get_scantron_config($env{'form.scantron_format'});
+    my ($scanlines,$scan_data)=&Apache::grades::scantron_getfile();
+    my $classlist=&Apache::loncoursedata::get_classlist();
+    my %idmap=&Apache::grades::username_to_idmap($classlist);
+    my $navmap=Apache::lonnavmaps::navmap->new();
+    my $map=$navmap->getResourceByUrl($sequence);
+    my @resources=$navmap->retrieveResources($map,undef,1,0);
+    my (%scandata,%lastname,%bylast);
+    $r->print('
+<form method="post" enctype="multipart/form-data" action="/adm/grades" name="checkscantron">'."\n");
 
-=back
+    my @delayqueue;
+    my %completedstudents;
+
+    my $count=&Apache::grades::get_todo_count($scanlines,$scan_data);
+    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Scantron/Submissions Comparison Status',
+                                    'Progress of Scantron Data/Submission Records Comparison',$count,
+                                    'inline',undef,'checkscantron');
+    my ($username,$domain,$uname,$started);
+
+    &Apache::grades::scantron_get_maxbubble();  # Need the bubble lines array to parse.
+
+    &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,
+                                          'Processing first student');
+    my $start=&Time::HiRes::time();
+    my $i=-1;
+
+    while ($i<$scanlines->{'count'}) {
+        ($username,$domain,$uname)=('','','');
+        $i++;
+        my $line=&Apache::grades::scantron_get_line($scanlines,$scan_data,$i);
+        if ($line=~/^[\s\cz]*$/) { next; }
+        if ($started) {
+            &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
+                                                     'last student');
+        }
+        $started=1;
+        my $scan_record=
+            &Apache::grades::scantron_parse_scanline($line,$i,\%scantron_config,
+                                                     $scan_data);
+        unless ($uname=&Apache::grades::scantron_find_student($scan_record,$scan_data,
+                                                              \%idmap,$i)) {
+            &Apache::grades::scantron_add_delay(\@delayqueue,$line,
+                                'Unable to find a student that matches',1);
+            next;
+        }
+        if (exists $completedstudents{$uname}) {
+            &Apache::grades::scantron_add_delay(\@delayqueue,$line,
+                                'Student '.$uname.' has multiple sheets',2);
+            next;
+        }
+        my $pid = $scan_record->{'scantron.ID'};
+        $lastname{$pid} = $scan_record->{'scantron.LastName'};
+        push(@{$bylast{$lastname{$pid}}},$pid);
+        my $lastpos = $env{'form.scantron_maxbubble'}*$scantron_config{'Qlength'};
+        $scandata{$pid} = substr($line,$scantron_config{'Qstart'}-1,$lastpos);
+        chomp($scandata{$pid});
+        $scandata{$pid} =~ s/\r$//;
+        ($username,$domain)=split(/:/,$uname);
+        my $counter = -1;
+        my (%expected,%startpos);
+        foreach my $resource (@resources) {
+            next if (!$resource->is_problem());
+            my $symb = $resource->symb();
+            my $partsref = $resource->parts();
+            my @parts;
+            my @part_ids = ();
+            if (ref($partsref) eq 'ARRAY') {
+               @parts = @{$partsref};
+               foreach my $part (@parts) {
+                   my @resp_ids = $resource->responseIds($part);
+                   foreach my $resp (@resp_ids) {
+                       $counter ++;
+                       my $part_id = $part.'.'.$resp;
+                       $expected{$part_id} = 0;
+                       push(@part_ids,$part_id);
+                       if ($env{"form.scantron.sub_bubblelines.$counter"}) {
+                           my @sub_lines = split(/,/,$env{"form.scantron.sub_bubblelines.$counter"});
+                           foreach my $item (@sub_lines) {
+                               $expected{$part_id} += $item;
+                           }
+                       } else {
+                           $expected{$part_id} = $env{"form.scantron.bubblelines.$counter"};
+                       }
+                       $startpos{$part_id} = $env{"form.scantron.first_bubble_line.$counter"};
+                   }
+                }
+            }
+            if ($symb) {
+                my %recorded;
+                my (%returnhash) =
+                    &Apache::lonnet::restore($symb,$cid,$domain,$username);
+                if ($returnhash{'version'}) {
+                    my %lasthash=();
+                    my $version;
+                    for ($version=1;$version<=$returnhash{'version'};$version++) {
+                        foreach my $key (sort(split(/\:/,$returnhash{$version.':keys'}))) {
+                            $lasthash{$key}=$returnhash{$version.':'.$key};
+                        }
+                    }
+                    foreach my $key (keys(%lasthash)) {
+                        if ($key =~ /\.scantron$/) {
+                            my $value = &unescape($lasthash{$key});
+                            my ($part_id) = ($key =~ /^resource\.(.+)\.scantron$/);
+                            if ($value eq '') {
+                                for (my $i=0; $i<$expected{$part_id}; $i++) {
+                                    for (my $j=0; $j<$scantron_config{'length'}; $j++) {
+                                        $recorded{$part_id} .= $;
+                                    }
+                                }
+                            } else {
+                                my @tocheck;
+                                my @items = split(//,$value);
+                                if (($scantron_config{'Qon'} eq 'letter') ||
+                                    ($scantron_config{'Qon'} eq 'number')) {
+                                    if (@items < $expected{$part_id}) {
+                                        my $fragment = substr($scandata{$pid},$startpos{$part_id},$expected{$part_id});
+                                        my @singles = split(//,$fragment);
+                                        foreach my $pos (@singles) {
+                                            if ($pos eq ' ') {
+                                                push(@tocheck,$pos);
+                                            } else {
+                                                my $next = shift(@items);
+                                                push(@tocheck,$next);
+                                            }
+                                        }
+                                    } else {
+                                        @tocheck = @items;
+                                    }
+                                    foreach my $letter (@tocheck) {
+                                        if ($scantron_config{'Qon'} eq 'letter') {
+                                            if ($letter !~ /^[A-J]$/) {
+                                                $letter = $scantron_config{'Qoff'};
+                                            }
+                                            $recorded{$part_id} .= $letter;
+                                        } elsif ($scantron_config{'Qon'} eq 'number') {
+                                            my $digit;
+                                            if ($letter !~ /^[A-J]$/) {
+                                                $digit = $scantron_config{'Qoff'};
+                                            } else {
+                                                $digit = $lettdig{$letter};
+                                            }
+                                            $recorded{$part_id} .= $digit;
+                                        }
+                                    }
+                                } else {
+                                    @tocheck = @items;
+                                    for (my $i=0; $i<$expected{$part_id}; $i++) {
+                                        my $curr_sub = shift(@tocheck);
+                                        my $digit;
+                                        if ($curr_sub =~ /^[A-J]$/) {
+                                            $digit = $lettdig{$curr_sub}-1;
+                                        }
+                                        if ($curr_sub eq 'J') {
+                                            $digit += scalar($numletts);
+                                        }
+                                        for (my $j=0; $j<$scantron_config{'Qlength'}; $j++) {
+                                            if ($j == $digit) {
+                                                $recorded{$part_id} .= $scantron_config{'Qon'};
+                                            } else {
+                                                $recorded{$part_id} .= $scantron_config{'Qoff'};
+                                            }
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+                foreach my $part_id (@part_ids) {
+                    if ($recorded{$part_id} eq '') {
+                        for (my $i=0; $i<$expected{$part_id}; $i++) {
+                            for (my $j=0; $j<$scantron_config{'Qlength'}; $j++) {
+                                $recorded{$part_id} .= $scantron_config{'Qoff'};
+                            }
+                        }
+                    }
+                    $record{$pid} .= $recorded{$part_id};
+                }
+            }
+        }
+    }
+    &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
+    $r->print('<br />');
+    my ($okstudents,$badstudents,$numstudents,$passed,$failed);
+    $passed = 0;
+    $failed = 0;
+    $numstudents = 0;
+    foreach my $last (sort(keys(%bylast))) {
+        if (ref($bylast{$last}) eq 'ARRAY') {
+            foreach my $pid (sort(@{$bylast{$last}})) {
+                my $showscandata = $scandata{$pid};
+                my $showrecord = $record{$pid};
+                $showscandata =~ s/\s/&nbsp;/g;
+                $showrecord =~ s/\s/&nbsp;/g;
+                if ($scandata{$pid} eq $record{$pid}) {
+                    my $css_class = ($passed % 2)?'LC_odd_row':'LC_even_row';
+                    $okstudents .= '<tr class="'.$css_class.'">'.
+'<td>'.&mt('Scantron').'</td><td>'.$showscandata.'</td><td rowspan="2">'.$last.'</td><td rowspan="2">'.$pid.'</td>'."\n".
+'</tr>'."\n".
+'<tr class="'.$css_class.'">'."\n".
+'<td>Submissions</td><td>'.$showrecord.'</td></tr>'."\n";
+                    $passed ++;
+                } else {
+                    my $css_class = ($failed % 2)?'LC_odd_row':'LC_even_row';
+                    $badstudents .= '<tr class="'.$css_class.'"><td>'.&mt('Scantron').'</td><td><span class="LC_nobreak">'.$scandata{$pid}.'</span></td><td rowspan="2">'.$last.'</td><td rowspan="2">'.$pid.'</td>'."\n".
+'</tr>'."\n".
+'<tr class="'.$css_class.'">'."\n".
+'<td>Submissions</td><td><span class="LC_nobreak">'.$record{$pid}.'</span></td>'."\n".
+'</tr>'."\n";
+                    $failed ++;
+                }
+                $numstudents ++;
+            }
+        }
+    }
+    $r->print('<p>'.&mt('Comparison of scantron data (including corrections) with corresponding submission records (most recent submission) for <b>[quant,_1,student]</b>  ([_2] scantron lines/student).',$numstudents,$env{'form.scantron_maxbubble'}).'</p>');
+    $r->print('<p>'.&mt('Exact matches for <b>[quant,_1,student]</b>.',$passed).'<br />'.&mt('Discrepancies detected for <b>[quant,_1,student]</b>.',$failed).'</p>');
+    if ($passed) {
+        $r->print(&mt('Students with exact correspondence between scantron data and submissions are as follows:').'<br /><br />');
+        $r->print(&Apache::loncommon::start_data_table()."\n".
+                 &Apache::loncommon::start_data_table_header_row()."\n".
+                 '<th>'.&mt('Source').'</th><th>'.&mt('Bubble records').'</th><th>'.&mt('Name').'</th><th>'.&mt('ID').'</th>'.
+                 &Apache::loncommon::end_data_table_header_row()."\n".
+                 $okstudents."\n".
+                 &Apache::loncommon::end_data_table().'<br />');
+    }
+    if ($failed) {
+        $r->print(&mt('Students with differences between scantron data and submissions are as follows:').'<br /><br />');
+        $r->print(&Apache::loncommon::start_data_table()."\n".
+                 &Apache::loncommon::start_data_table_header_row()."\n".
+                 '<th>'.&mt('Source').'</th><th>'.&mt('Bubble records').'</th><th>'.&mt('Name').'</th><th>'.&mt('ID').'</th>'.
+                 &Apache::loncommon::end_data_table_header_row()."\n".
+                 $badstudents."\n".
+                 &Apache::loncommon::end_data_table()).'<br />'.
+                 &mt('Differences can occur if submissions were modified using manual grading after a scantron grading pass.').'<br />'.&mt('If unexpected discrepancies were detected, it is recommended that you inspect the original scantron sheets.');  
+    }
+    $r->print('</form><br />'.$grading_menu_button);
+    return;
+}
 
-=cut
 
 #-------- end of section for handling grading scantron forms -------
 #
@@ -7391,25 +8177,25 @@ sub grading_menu {
                  });
     $fields{'command'} = 'csvform';
     $url = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
-    push (@menu, { url => $url,
+    push(@menu, { url => $url,
                    name => &mt('Upload Scores'),
                    short_description => 
             &mt('Specify a file containing the class scores for current resource.')});
     $fields{'command'} = 'processclicker';
     $url = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
-    push (@menu, { url => $url,
+    push(@menu, { url => $url,
                    name => &mt('Process Clicker'),
                    short_description => 
             &mt('Specify a file containing the clicker information for this resource.')});
     $fields{'command'} = 'scantron_selectphase';
     $url = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
-    push (@menu, { url => $url,
-                   name => &mt('Grade/Manage Scantron Forms'),
+    push(@menu, { url => $url,
+                   name => &mt('Grade/Manage/Review Scantron Forms'),
                    short_description => 
-            &mt('')});
+            &mt('Grade scantron exams, upload/download scantron data files, and review previously graded scantron exams.')});
     $fields{'command'} = 'verify';
     $url = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
-    push (@menu, { url => "",
+    push(@menu, { url => "",
                    name => &mt('Verify Receipt'),
                    short_description => 
             &mt('')});
@@ -7434,14 +8220,12 @@ sub grading_menu {
                 $menudata->{'url'}.'" >'.
                 $menudata->{'name'}."</a></h3>\n";
         } else {
-            $Str .='    <h3><input type="button" value="'.&mt('Verify Receipt').'" '.
+            $Str .='<hr /><input type="button" value="'.&mt('Verify Receipt').'" '.
                 $menudata->{'jscript'}.
                 ' onClick="javascript:checkChoice(document.forms.gradingMenu,\'5\',\'verify\')" '.
-                ' /></h3>';
-            $Str .= ('&nbsp;'x8).
-		&mt(' receipt: [_1]',
-		    &Apache::lonnet::recprefix($env{'request.course.id'}).
-                    '-<input type="text" name="receipt" size="4" onChange="javascript:checkReceiptNo(this.form,\'OK\')" />');
+                ' /> '.
+		&Apache::lonnet::recprefix($env{'request.course.id'}).
+                    '-<input type="text" name="receipt" size="4" onChange="javascript:checkReceiptNo(this.form,\'OK\')" />';
         }
         $Str .= '    '.('&nbsp;'x8).$menudata->{'short_description'}.
             "\n";
@@ -7567,7 +8351,7 @@ GRADINGMENUJS
              <div class="LC_grade_select_mode_selector_body">
 	       <select name="section" multiple="multiple" size="5">'."\n";
     if (ref($sections)) {
-	foreach my $section (sort (@$sections)) {
+	foreach my $section (sort(@$sections)) {
 	    $result.='<option value="'.$section.'" '.
 		($saveSec eq $section ? 'selected="selected"':'').'>'.$section.'</option>'."\n";
 	}
@@ -7648,6 +8432,7 @@ GRADINGMENUJS
       </div>
     </div>
   </form>';
+    $result .= &show_grading_menu_form($symb);
     return $result;
 }
 
@@ -7757,7 +8542,7 @@ sub process_clicker {
     if (!$env{'form.upfiletype'}) { $env{'form.upfiletype'}='iclicker'; }
 
     my %checked;
-    foreach my $gradingmechanism ('attendance','personnel','specific') {
+    foreach my $gradingmechanism ('attendance','personnel','specific','given') {
        if ($env{'form.gradingmechanism'} eq $gradingmechanism) {
           $checked{$gradingmechanism}="checked='checked'";
        }
@@ -7768,6 +8553,8 @@ sub process_clicker {
     my $attendance=&mt("Award points just for participation");
     my $personnel=&mt("Correctness determined from response by course personnel");
     my $specific=&mt("Correctness determined from response with clicker ID(s)"); 
+    my $given=&mt("Correctness determined from given list of answers").' '.
+              '<font size="-2"><tt>('.&mt("Provide comma-separated list. Use '*' for any answer correct, '-' for skip").')</tt></font>';
     my $pcorrect=&mt("Percentage points for correct solution");
     my $pincorrect=&mt("Percentage points for incorrect solution");
     my $selectform=&Apache::loncommon::select_form($env{'form.upfiletype'},'upfiletype',
@@ -7825,6 +8612,9 @@ function sanitycheck() {
 <br /><label><input type="radio" name="gradingmechanism" value="personnel" $checked{'personnel'} onClick="sanitycheck()" />$personnel</label>
 <br /><label><input type="radio" name="gradingmechanism" value="specific" $checked{'specific'} onClick="sanitycheck()" />$specific </label>
 <input type="text" name="specificid" value="$env{'form.specificid'}" size="20" />
+<br /><label><input type="radio" name="gradingmechanism" value="given" $checked{'given'} onClick="sanitycheck()" />$given </label>
+<br />&nbsp;&nbsp;&nbsp;
+<input type="text" name="givenanswer" size="50" />
 <input type="hidden" name="waschecked" value="$env{'form.gradingmechanism'}" />
 <br /><label>$pcorrect: <input type="text" name="pcorrect" size="4" value="$env{'form.pcorrect'}" onChange="sanitycheck()" /></label>
 <br /><label>$pincorrect: <input type="text" name="pincorrect" size="4" value="$env{'form.pincorrect'}" onChange="sanitycheck()" /></label>
@@ -7851,6 +8641,19 @@ sub process_clicker_file {
 	$result.='<span class="LC_error">'.&mt('You need to specify a clicker ID for the correct answer').'</span>';
 	return $result.&show_grading_menu_form($symb);
     }
+    if (($env{'form.gradingmechanism'} eq 'given') && ($env{'form.givenanswer'}!~/\S/)) {
+        $result.='<span class="LC_error">'.&mt('You need to specify the correct answer').'</span>';
+        return $result.&show_grading_menu_form($symb);
+    }
+    my $foundgiven=0;
+    if ($env{'form.gradingmechanism'} eq 'given') {
+        $env{'form.givenanswer'}=~s/^\s*//gs;
+        $env{'form.givenanswer'}=~s/\s*$//gs;
+        $env{'form.givenanswer'}=~s/[^a-zA-Z0-9\.\*\-]+/\,/g;
+        $env{'form.givenanswer'}=uc($env{'form.givenanswer'});
+        my @answers=split(/\,/,$env{'form.givenanswer'});
+        $foundgiven=$#answers+1;
+    }
     my %clicker_ids=&gather_clicker_ids();
     my %correct_ids;
     if ($env{'form.gradingmechanism'} eq 'personnel') {
@@ -7869,6 +8672,8 @@ sub process_clicker_file {
     }
     if ($env{'form.gradingmechanism'} eq 'attendance') {
 	$result.=&mt('Score based on attendance only');
+    } elsif ($env{'form.gradingmechanism'} eq 'given') {
+        $result.=&mt('Score based on [_1] ([_2] answers)','<tt>'.$env{'form.givenanswer'}.'</tt>',$foundgiven);
     } else {
 	my $number=0;
 	$result.='<p><b>'.&mt('Correctness determined by the following IDs').'</b>';
@@ -7914,6 +8719,9 @@ sub process_clicker_file {
 <input type="hidden" name="pcorrect" value="$env{'form.pcorrect'}" />
 <input type="hidden" name="pincorrect" value="$env{'form.pincorrect'}" />
 ENDHEADER
+    if ($env{'form.gradingmechanism'} eq 'given') {
+       $result.='<input type="hidden" name="correct:given" value="'.$env{'form.givenanswer'}.'" />';
+    } 
     my %responses;
     my @questiontitles;
     my $errormsg='';
@@ -7926,11 +8734,13 @@ ENDHEADER
     }
     $result.='<br />'.&mt('Found [_1] question(s)',$number).'<br />'.
              '<input type="hidden" name="number" value="'.$number.'" />'.
-             &mt('Awarding [_1] percent for corrion(s)',$number).'<br />'.
-             '<input type="hidden" name="number" value="'.$number.'" />'.
              &mt('Awarding [_1] percent for correct and [_2] percent for incorrect responses',
                  $env{'form.pcorrect'},$env{'form.pincorrect'}).
              '<br />';
+    if (($env{'form.gradingmechanism'} eq 'given') && ($number!=$foundgiven)) {
+       $result.='<span class="LC_error">'.&mt('Number of given answers does not agree with number of questions in file.').'</span>';
+       return $result.&show_grading_menu_form($symb);
+    } 
 # Remember Question Titles
 # FIXME: Possibly need delimiter other than ":"
     for (my $i=0;$i<$number;$i++) {
@@ -7974,7 +8784,7 @@ ENDHEADER
     }
     $result.='<hr />'.
              &mt('Found [_1] registered and [_2] unregistered clickers.',$student_count,$unknown_count);
-    if ($env{'form.gradingmechanism'} ne 'attendance') {
+    if (($env{'form.gradingmechanism'} ne 'attendance') && ($env{'form.gradingmechanism'} ne 'given')) {
        if ($correct_count==0) {
           $errormsg.="Found no correct answers answers for grading!";
        } elsif ($correct_count>1) {
@@ -8045,7 +8855,7 @@ sub interwrite_eval {
         $id=~s/[\-\:]//g;
         $idresponses{$id}[$number]=$entries[6];
     }
-    foreach my $id (keys %idresponses) {
+    foreach my $id (keys(%idresponses)) {
        $$responses{$id}=join(',',@{$idresponses{$id}});
        $$responses{$id}=~s/^\s*\,//;
     }
@@ -8119,10 +8929,15 @@ ENDHEADER
        if ($user) { 
           my @answer=split(/\,/,$env{$key});
           my $sum=0;
+          my $realnumber=$number;
           for (my $i=0;$i<$number;$i++) {
              if ($answer[$i]) {
                 if ($gradingmechanism eq 'attendance') {
                    $sum+=$pcorrect;
+                } elsif ($answer[$i] eq '*') {
+                   $sum+=$pcorrect;
+                } elsif ($answer[$i] eq '-') {
+                   $realnumber--;
                 } else {
                    if ($answer[$i] eq $correct[$i]) {
                       $sum+=$pcorrect;
@@ -8132,7 +8947,7 @@ ENDHEADER
                 }
              }
           }
-          my $ave=$sum/(100*$number);
+          my $ave=$sum/(100*$realnumber);
 # Store
           my ($username,$domain)=split(/\:/,$user);
           my %grades=();
@@ -8175,7 +8990,7 @@ sub handler {
 	&Apache::lonnet::logthis("grades got multiple commands ".join(':',@commands));
     }
 
-
+    $ssi_error = 0;
     $request->print(&Apache::loncommon::start_page('Grading'));
     if ($symb eq '' && $command eq '') {
 	if ($env{'user.adv'}) {
@@ -8188,7 +9003,7 @@ sub handler {
 		if ($tsymb) {
 		    my ($map,$id,$url)=&Apache::lonnet::decode_symb($tsymb);
 		    if (&Apache::lonnet::allowed('mgr',$tcrsid)) {
-			$request->print(&Apache::lonnet::ssi_body('/res/'.$url,
+			$request->print(&ssi_with_retries('/res/'.$url, $ssi_retries,
 					  ('grade_username' => $tuname,
 					   'grade_domain' => $tudom,
 					   'grade_courseid' => $tcrsid,
@@ -8271,10 +9086,15 @@ sub handler {
  	} elsif ($command eq 'scantron_download' &&
 		 &Apache::lonnet::allowed('usc',$env{'request.course.id'})) {
  	    $request->print(&scantron_download_scantron_data($request));
+        } elsif ($command eq 'checksubmissions' && $perm{'vgr'}) {
+            $request->print(&checkscantron_results($request));     
 	} elsif ($command) {
 	    $request->print("Access Denied ($command)");
 	}
     }
+    if ($ssi_error) {
+	&ssi_print_error($request);
+    }
     $request->print(&Apache::loncommon::end_page());
     &reset_caches();
     return '';