--- loncom/homework/grades.pm	2003/07/25 20:35:40	1.125
+++ loncom/homework/grades.pm	2003/11/21 22:59:42	1.161
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Grading handler
 #
-# $Id: grades.pm,v 1.125 2003/07/25 20:35:40 ng Exp $
+# $Id: grades.pm,v 1.161 2003/11/21 22:59:42 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -55,17 +55,35 @@ my %perm=();
 
 # ----- These first few routines are general use routines.----
 #
-# --- Retrieve the parts that matches stores_\d+ from the metadata file.---
+# --- Retrieve the parts from the metadata file.---
 sub getpartlist {
-    my ($url) = @_;
-    my @parts =();
-    my (@metakeys) = split(/,/,&Apache::lonnet::metadata($url,'keys'));
-    foreach my $key (@metakeys) {
-	if ( $key =~ m/stores_(\w+)_.*/) {
-	    push(@parts,$key);
+    my ($url,$symb) = @_;
+    my $partorder = &Apache::lonnet::metadata($url, 'partorder');
+    my @parts;
+    if ($partorder) {
+	for my $part (split (/,/,$partorder)) {
+	    if (!&Apache::loncommon::check_if_partid_hidden($part,$symb)) {
+		push(@parts, $part);
+	    }
+	}	    
+    } else {
+	my $metadata = &Apache::lonnet::metadata($url, 'packages');
+	foreach (split(/\,/,$metadata)) {
+	    if ($_ =~ /^part_(.*)$/) {
+		if (!&Apache::loncommon::check_if_partid_hidden($1,$symb)) {
+		    push(@parts, $1);
+		}
+	    }
 	}
     }
-    return @parts;
+    my @stores;
+    foreach my $part (@parts) {
+	my (@metakeys) = split(/,/,&Apache::lonnet::metadata($url,'keys'));
+	foreach my $key (@metakeys) {
+	    if ($key =~ m/^stores_\Q$part\E_/) { push(@stores,$key); }
+	}
+    }
+    return @stores;
 }
 
 # --- Get the symbolic name of a problem and the url
@@ -96,72 +114,170 @@ sub get_fullname {
     return $fullname;
 }
 
+#--- Format fullname, username:domain if different for display
+#--- Use anywhere where the student names are listed
+sub nameUserString {
+    my ($type,$fullname,$uname,$udom) = @_;
+    if ($type eq 'header') {
+	return '<b>&nbsp;Fullname&nbsp;</b><font color="#999999">(Username)</font>&nbsp;';
+    } else {
+	return '&nbsp;'.$fullname.'<font color="#999999">&nbsp;('.$uname.
+	    ($ENV{'user.domain'} eq $udom ? '' : ' ('.$udom.')').')</font>';
+    }
+}
+
 #--- Get the partlist and the response type for a given problem. ---
 #--- Indicate if a response type is coded handgraded or not. ---
 sub response_type {
     my ($url,$symb) = shift;
     $symb=($ENV{'form.symb'} ne '' ? $ENV{'form.symb'} : (&Apache::lonnet::symbread($url))) if ($symb eq '');
     my $allkeys = &Apache::lonnet::metadata($url,'keys');
+    my %vPart;
+    foreach my $partid (&Apache::loncommon::get_env_multiple('form.vPart')) {
+	$vPart{$partid}=1;
+    }
     my %seen = ();
-    my (@partlist,%handgrade);
+    my (@partlist,%handgrade,%responseType);
     foreach (split(/,/,&Apache::lonnet::metadata($url,'packages'))) {
-	if (/^\w+response_\w+.*/) {
+	if (/^\w+response_.*/) {
 	    my ($responsetype,$part) = split(/_/,$_,2);
 	    my ($partid,$respid) = split(/_/,$part);
+	    if (&Apache::loncommon::check_if_partid_hidden($partid,$symb)) {
+		next;
+	    }
+	    if (%vPart && !exists($vPart{$partid})) {
+		next;
+	    }
 	    $responsetype =~ s/response$//; # make it compatible w/ navmaps - should move to that!!
-#	    my ($value) = &Apache::lonnet::EXT('resource.'.$part.'.handgrade',$symb);
-#	    $handgrade{$part} = $responsetype.':'.($value eq 'yes' ? 'yes' : 'no'); #a bug $value is 'yes' regardless
-	    $handgrade{$part} = $responsetype.':'.(($allkeys =~ /parameter_$part\_handgrade/) ? 'yes' : 'no');
+	    my ($value) = &Apache::lonnet::EXT('resource.'.$part.'.handgrade',$symb);
+	    $handgrade{$part} = ($value eq 'yes' ? 'yes' : 'no'); 
+	    if (!exists($responseType{$partid})) { $responseType{$partid}={}; }
+	    $responseType{$partid}->{$respid}=$responsetype;
 	    next if ($seen{$partid} > 0);
 	    $seen{$partid}++;
 	    push @partlist,$partid;
 	}
     }
-    return \@partlist,\%handgrade;
+    return \@partlist,\%handgrade,\%responseType;
 }
 
 #--- Show resource title
 #--- and parts and response type
 sub showResourceInfo {
-    my ($url,$probTitle) = @_;
+    my ($url,$probTitle,$checkboxes) = @_;
+    my $col=3;
+    if ($checkboxes) { $col=4; }
     my $result ='<table border="0">'.
-	'<tr><td colspan=3><font size=+1><b>Current Resource: </b>'.$probTitle.'</font></td></tr>'."\n";
-    my ($partlist,$handgrade) = &response_type($url);
-    my %resptype = (); #,$hdgrade)=('','no');
+	'<tr><td colspan="'.$col.'"><font size="+1"><b>Current Resource: </b>'.
+	$probTitle.'</font></td></tr>'."\n";
+    my ($partlist,$handgrade,$responseType) = &response_type($url);
+    my %resptype = ();
     my $hdgrade='no';
-    for (sort keys(%$handgrade)) {
-	my ($responsetype,$handgrade)=split(/:/,$$handgrade{$_});
-	my $partID = (split(/_/))[0];
-	$resptype{$partID} = $responsetype;
+    my %partsseen;
+    for my $part_resID (sort keys(%$handgrade)) {
+	my $handgrade=$$handgrade{$part_resID};
+	my ($partID,$resID) = split(/_/,$part_resID);
+	my $responsetype = $responseType->{$partID}->{$resID};
 	$hdgrade = $handgrade if ($handgrade eq 'yes');
-	$result.='<tr><td><b>Part </b>'.$partID.'</td>'.
+	$result.='<tr>';
+	if ($checkboxes) {
+	    if (exists($partsseen{$partID})) {
+		$result.="<td>&nbsp;</td>";
+	    } else {
+		$result.="<td><input type='checkbox' name='vPart' value='$partID' checked='on' /></td>";
+	    }
+	    $partsseen{$partID}=1;
+	}
+	$result.='<td><b>Part </b>'.$partID.' <font color="#999999">'.
+	    $resID.'</font></td>'.
 	    '<td><b>Type: </b>'.$responsetype.'</td></tr>';
 #	    '<td><b>Handgrade: </b>'.$handgrade.'</td></tr>';
     }
     $result.='</table>'."\n";
-    return $result,\%resptype,$hdgrade,$partlist,$handgrade;
+    return $result,$responseType,$hdgrade,$partlist,$handgrade;
 }
 
+
+sub get_order {
+    my ($partid,$respid,$symb,$uname,$udom)=@_;
+    my (undef,undef,$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' => $uname));
+    (undef,$subresult)=split(/_HASH_REF__/,$subresult,2);
+    my %analyze=&Apache::lonnet::str2hash($subresult);
+    return ($analyze{"$partid.$respid.shown"});
+}
 #--- Clean response type for display
-#--- Currently filters option response type only.
+#--- Currently filters option/rank/radiobutton/match/essay response types only.
 sub cleanRecord {
-    my ($answer,$response,$symb) = @_;
-    if ($response eq 'option') {
-	my (@IDs,@ans);
-	foreach (split(/\&/,&Apache::lonnet::unescape($answer))) {
-	    my ($optionID,$ans) = split(/=/);
-	    push @IDs,$optionID.'</font>';
-	    push @ans,$ans;
-	}
-	my $grayFont = '<font color="#999999">';
-	return '<table border="1">'.
-	    '<tr valign="top"><td>Answer</td><td>'.
-	    (join '</td><td>',@ans).'</td></tr>'.
-	    '<tr valign="top"><td>'.$grayFont.'Option ID</font></td><td>'.$grayFont.
-	    (join '</td><td>'.$grayFont,@IDs).'</font></td></tr>'.
-	    '</table>';
-    }
-    if ($response eq 'essay') {
+    my ($answer,$response,$symb,$partid,$respid,$record,$order,$version) = @_;
+    my $grayFont = '<font color="#999999">';
+    if ($response =~ /^(option|rank)$/) {
+	my %answer=&Apache::lonnet::str2hash($answer);
+	my %grading=&Apache::lonnet::str2hash($record->{$version."resource.$partid.$respid.submissiongrading"});
+	my ($toprow,$bottomrow);
+	foreach my $foil (@$order) {
+	    if ($grading{$foil} == 1) {
+		$toprow.='<td><b>'.$answer{$foil}.'&nbsp;</b></td>';
+	    } else {
+		$toprow.='<td><i>'.$answer{$foil}.'&nbsp;</i></td>';
+	    }
+	    $bottomrow.='<td>'.$grayFont.$foil.'</font>&nbsp;</td>';
+	}
+	return '<blockquote><table border="1">'.
+	    '<tr valign="top"><td>Answer</td>'.$toprow.'</tr>'.
+	    '<tr valign="top"><td>'.$grayFont.'Option ID</font></td>'.
+	    $grayFont.$bottomrow.'</tr>'.'</table></blockquote>';
+    } elsif ($response eq 'match') {
+	my %answer=&Apache::lonnet::str2hash($answer);
+	my %grading=&Apache::lonnet::str2hash($record->{$version."resource.$partid.$respid.submissiongrading"});
+	my @items=&Apache::lonnet::str2array($record->{$version."resource.$partid.$respid.submissionitems"});
+	my ($toprow,$middlerow,$bottomrow);
+	foreach my $foil (@$order) {
+	    my $item=shift(@items);
+	    if ($grading{$foil} == 1) {
+		$toprow.='<td><b>'.$item.'&nbsp;</b></td>';
+		$middlerow.='<td><b>'.$grayFont.$answer{$foil}.'&nbsp;</font></b></td>';
+	    } else {
+		$toprow.='<td><i>'.$item.'&nbsp;</i></td>';
+		$middlerow.='<td><i>'.$grayFont.$answer{$foil}.'&nbsp;</font></i></td>';
+	    }
+	    $bottomrow.='<td>'.$grayFont.$foil.'</font>&nbsp;</td>';
+	}
+	return '<blockquote><table border="1">'.
+	    '<tr valign="top"><td>Answer</td>'.$toprow.'</tr>'.
+	    '<tr valign="top"><td>'.$grayFont.'Item ID</font></td>'.
+	    $middlerow.'</tr>'.
+	    '<tr valign="top"><td>'.$grayFont.'Option ID</font></td>'.
+	    $bottomrow.'</tr>'.'</table></blockquote>';
+    } elsif ($response eq 'radiobutton') {
+	my %answer=&Apache::lonnet::str2hash($answer);
+	my ($toprow,$bottomrow);
+	my $correct=($order->[0])+1;
+	for (my $i=1;$i<=$#$order;$i++) {
+	    my $foil=$order->[$i];
+	    if (exists($answer{$foil})) {
+		if ($i == $correct) {
+		    $toprow.='<td><b>true</b></td>';
+		} else {
+		    $toprow.='<td><i>true</i></td>';
+		}
+	    } else {
+		$toprow.='<td>false</td>';
+	    }
+	    $bottomrow.='<td>'.$grayFont.$foil.'</font>&nbsp;</td>';
+	}
+	return '<blockquote><table border="1">'.
+	    '<tr valign="top"><td>Answer</td>'.$toprow.'</tr>'.
+	    '<tr valign="top"><td>'.$grayFont.'Option ID</font></td>'.
+	    $grayFont.$bottomrow.'</tr>'.'</table></blockquote>';
+    } elsif ($response eq 'essay') {
 	if (! exists ($ENV{'form.'.$symb})) {
 	    my (%keyhash) = &Apache::lonnet::dump('nohist_handgrade',
 						  $ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
@@ -174,7 +290,7 @@ sub cleanRecord {
 	    $ENV{'form.kwstyle'}  = $keyhash{$loginuser.'_kwstyle'} ne '' ? $keyhash{$loginuser.'_kwstyle'} : '';
 	    $ENV{'form.'.$symb} = 1; # so that we don't have to read it from disk for multiple sub of the same prob.
 	}
-	return &keywords_highlight($answer);
+	return '<br /><br /><blockquote><pre>'.&keywords_highlight($answer).'</pre></blockquote>';
     }
     return $answer;
 }
@@ -207,7 +323,8 @@ sub commonJSfunctions {
 		}
 	    }
 	} else {
-	    if (selectOne.selected) return selectOne.value;
+            // only one value it must be the selected one
+	    return selectOne.value;
 	}
     }
 </script>
@@ -299,7 +416,7 @@ sub student_gradeStatus {
     my %record     = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);
     my %partstatus = ();
     foreach (@$partlist) {
-	my ($status,$foo)    = split(/_/,$record{"resource.$_.solved"},2);
+	my ($status,undef)   = split(/_/,$record{"resource.$_.solved"},2);
 	$status              = 'nothing' if ($status eq '');
 	$partstatus{$_}      = $status;
 	my $subkey           = "resource.$_.submitted_by";
@@ -453,8 +570,7 @@ sub listStudents {
     my $result='<h3><font color="#339933">&nbsp;'.$viewgrade.
 	' Submissions for a Student or a Group of Students</font></h3>';
 
-    my ($table,undef,$hdgrade,$partlist,$handgrade) = &showResourceInfo($url,$ENV{'form.probTitle'});
-    $result.=$table;
+    my ($table,undef,$hdgrade,$partlist,$handgrade) = &showResourceInfo($url,$ENV{'form.probTitle'},($ENV{'form.showgrading'} eq 'yes'));
 
     $request->print(<<LISTJAVASCRIPT);
 <script type="text/javascript" language="javascript">
@@ -475,7 +591,7 @@ sub listStudents {
 	    sense = "the student";
 	}
 	if (ctr == 0) {
-	    alert("Please select "+sense+" before clicking on the $viewgrade button.");
+	    alert("Please select "+sense+" before clicking on the Next button.");
 	    return false;
 	}
 	document.gradesub.submit();
@@ -494,10 +610,14 @@ LISTJAVASCRIPT
 
     my $checkhdgrade = ($ENV{'form.handgrade'} eq 'yes' && scalar(@$partlist) > 1 ) ? 'checked' : '';
     my $checklastsub = $checkhdgrade eq '' ? 'checked' : '';
-    my $gradeTable='<form action="/adm/grades" method="post" name="gradesub">'."\n".
-	'&nbsp;<b>View Problem Text: </b><input type="radio" name="vProb" value="no" checked /> no '."\n".
+    my $gradeTable='<form action="/adm/grades" method="post" name="gradesub">'.
+	"\n".$table.
+	'&nbsp;<b>View Problem Text: </b><input type="radio" name="vProb" value="no" checked="on" /> no '."\n".
 	'<input type="radio" name="vProb" value="yes" /> one student '."\n".
 	'<input type="radio" name="vProb" value="all" /> all students <br />'."\n".
+	'&nbsp;<b>View Answer: </b><input type="radio" name="vAns" value="no"  /> no '."\n".
+	'<input type="radio" name="vAns" value="yes" /> one student '."\n".
+	'<input type="radio" name="vAns" value="all" checked="on" /> all students <br />'."\n".
 	'&nbsp;<b>Submissions: </b>'."\n";
     if ($ENV{'form.handgrade'} eq 'yes' && scalar(@$partlist) > 1) {
 	$gradeTable.='<input type="radio" name="lastSub" value="hdgrade" '.$checkhdgrade.' /> essay part only'."\n";
@@ -506,8 +626,8 @@ LISTJAVASCRIPT
     my $saveStatus = $ENV{'form.Status'} eq '' ? 'Active' : $ENV{'form.Status'};
     $ENV{'form.Status'} = $saveStatus;
 
-    $gradeTable.='<input type="radio" name="lastSub" value="lastonly" '.$checklastsub.' /> last sub only'."\n".
-	'<input type="radio" name="lastSub" value="last" /> last sub & parts info'."\n".
+    $gradeTable.='<input type="radio" name="lastSub" value="lastonly" '.$checklastsub.' /> last submission only'."\n".
+	'<input type="radio" name="lastSub" value="last" /> last submission & parts info'."\n".
 	'<input type="radio" name="lastSub" value="datesub" /> by dates and submissions'."\n".
 	'<input type="radio" name="lastSub" value="all" /> all details'."\n".
 	'<input type="hidden" name="section"     value="'.$getsec.'" />'."\n".
@@ -527,27 +647,27 @@ LISTJAVASCRIPT
 	    &Apache::lonhtmlcommon::StatusOptions($saveStatus,undef,1,'javascript:reLoadList(this.form);').'<br />';
     }
 
-    $gradeTable.='To '.lc($viewgrade).' a submission, click on the check box next to the student\'s name. Then '."\n".
-	'click on the '.$viewgrade.' button. To view the submissions for a group of students, click'."\n".
-	' on the check boxes for the group of students.<br />'."\n".
+    $gradeTable.='To '.lc($viewgrade).' a submission or a group of submissions, click on the check box(es) '.
+	'next to the student\'s name(s). Then click on the Next button.<br />'."\n".
 	'<input type="hidden" name="command" value="processGroup" />'."\n";
     $gradeTable.='<input type="button" '."\n".
 	'onClick="javascript:checkSelect(this.form.stuinfo);" '."\n".
-	'value="'.$viewgrade.'" />'."\n";
-
+	'value="Next->" />'."\n";
+    $gradeTable.='<input type="checkbox" name="checkPlag" checked="on">Check For Plagiarism</input>';
     my (undef, undef, $fullname) = &getclasslist($getsec,'1');  
     $gradeTable.='<table border="0"><tr><td bgcolor="#777777">'.
 	'<table border="0"><tr bgcolor="#e6ffff">';
     my $loop = 0;
     while ($loop < 2) {
-	$gradeTable.='<td><b>&nbsp;Select&nbsp;</b></td><td><b>&nbsp;Fullname&nbsp;</b>'.
-	    '<font color="#999999">(Username)</font>&nbsp;</td>';
+	$gradeTable.='<td><b>&nbsp;No.</b>&nbsp;</td><td><b>&nbsp;Select&nbsp;</b></td>'.
+	    '<td>'.&nameUserString('header').'</td>';
 	if ($ENV{'form.showgrading'} eq 'yes' && $submitonly ne 'all') {
 	    foreach (sort(@$partlist)) {
 		$gradeTable.='<td><b>&nbsp;Part '.(split(/_/))[0].' Status&nbsp;</b></td>';
 	    }
 	}
 	$loop++;
+#	$gradeTable.='<td></td>' if ($loop%2 ==1);
     }
     $gradeTable.='</tr>'."\n";
 
@@ -557,27 +677,34 @@ LISTJAVASCRIPT
 	my %status = ();
 	if ($ENV{'form.showgrading'} eq 'yes' && $submitonly ne 'all') {
 	    (%status) =&student_gradeStatus($url,$symb,$udom,$uname,$partlist);
-	    my $statusflg = '';
+	    my $submitted = 0;
+	    my $graded = 1;
 	    foreach (keys(%status)) {
-		$statusflg = 1 if ($status{$_} ne 'nothing');
+		$submitted = 1 if ($status{$_} ne 'nothing');
+		$graded = 0 if ($status{$_} =~ /^correct/);
 		my ($foo,$partid,$foo1) = split(/\./,$_);
 		if ($status{'resource.'.$partid.'.submitted_by'} ne '') {
-		    $statusflg = '';
+		    $submitted = 0;
+		    my ($part)=split(/\./,$partid);
 		    $gradeTable.='<input type="hidden" name="'.
-			$student.':submitted_by" value="'.
+			$student.':'.$part.':submitted_by" value="'.
 			$status{'resource.'.$partid.'.submitted_by'}.'" />';
 		}
 	    }
-	    next if ($statusflg eq '' && $submitonly eq 'yes');
+	    next if (!$submitted && ($submitonly eq 'yes' ||
+				     $submitonly eq 'incorrect' ||
+				     $submitonly eq 'graded'));
+	    next if (!$graded && ($submitonly eq 'graded' ||
+				  $submitonly eq 'incorrect'));
 	}
 
 	$ctr++;
 	if ( $perm{'vgr'} eq 'F' ) {
 	    $gradeTable.='<tr bgcolor="#ffffe6">' if ($ctr%2 ==1);
-	    $gradeTable.='<td align="center"><input type=checkbox name="stuinfo" value="'.
+	    $gradeTable.='<td align="right">'.$ctr.'&nbsp;</td>'.
+		'<td align="center"><input type=checkbox name="stuinfo" value="'.
 		$student.':'.$$fullname{$student}.'&nbsp;"></td>'."\n".
-		'<td>&nbsp;'.$$fullname{$student}.'&nbsp;'."\n".
-		'<font color="#999999">('.$uname.')</font></td>'."\n";
+		'<td>'.&nameUserString(undef,$$fullname{$student},$uname,$udom).'</td>'."\n";
 
 	    if ($ENV{'form.showgrading'} eq 'yes' && $submitonly ne 'all') {
 		foreach (sort keys(%status)) {
@@ -585,11 +712,12 @@ LISTJAVASCRIPT
 		    $gradeTable.='<td align="middle">&nbsp;'.$status{$_}.'&nbsp;</td>'."\n";
 		}
 	    }
+#	    $gradeTable.='<td></td>' if ($ctr%2 ==1);
 	    $gradeTable.='</tr>'."\n" if ($ctr%2 ==0);
 	}
     }
     if ($ctr%2 ==1) {
-	$gradeTable.='<td>&nbsp;</td><td>&nbsp;</td>';
+	$gradeTable.='<td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td>';
 	    if ($ENV{'form.showgrading'} eq 'yes' && $submitonly ne 'all') {
 		foreach (@$partlist) {
 		    $gradeTable.='<td>&nbsp;</td>';
@@ -601,7 +729,7 @@ LISTJAVASCRIPT
     $gradeTable.='</table></td></tr></table>'.
 	'<input type="button" '.
 	'onClick="javascript:checkSelect(this.form.stuinfo);" '.
-	'value="'.$viewgrade.'" /></form>'."\n";
+	'value="Next->" /></form>'."\n";
     if ($ctr == 0) {
 	my $num_students=(scalar(keys(%$fullname)));
 	if ($num_students eq 0) {
@@ -609,7 +737,7 @@ LISTJAVASCRIPT
 	} else {
 	    $gradeTable='<br />&nbsp;<font color="red">'.
 		'No submissions found for this resource for any students. ('.$num_students.
-		' checked for submissions</font><br />';
+		' checked for submissions)</font><br />';
 	}
     } elsif ($ctr == 1) {
 	$gradeTable =~ s/type=checkbox/type=checkbox checked/;
@@ -624,8 +752,7 @@ LISTJAVASCRIPT
 sub processGroup {
     my ($request)  = shift;
     my $ctr        = 0;
-    my @stuchecked = (ref($ENV{'form.stuinfo'}) ? @{$ENV{'form.stuinfo'}}
-		      : ($ENV{'form.stuinfo'}));
+    my @stuchecked = &Apache::loncommon::get_env_multiple('form.stuinfo');
     my $total      = scalar(@stuchecked)-1;
 
     foreach (@stuchecked) {
@@ -752,12 +879,13 @@ sub sub_page_js {
 	    for (i=0;i<=total;i++) {
 		for (j=0;j<parttot;j++) {
 		    var partid = formname["partid"+i+"_"+j].value;
-		    var selopt = formname["GD_SEL"+i+"_"+partid];
-		    if (selopt[0].selected) {
+		    if (formname["GD_SEL"+i+"_"+partid][0].selected) {
 			var points = formname["GD_BOX"+i+"_"+partid].value;
 			if (points == "") {
 			    var name = formname["name"+i].value;
-			    var resp = confirm("You did not assign a score for "+name+", part "+partid+". Continue?");
+			    var studentID = (name != '' ? name : formname["unamedom"+i].value);
+			    var resp = confirm("You did not assign a score for "+studentID+
+					       ", part "+partid+". Continue?");
 			    if (resp == false) {
 				formname["GD_BOX"+i+"_"+partid].focus();
 				return false;
@@ -785,8 +913,7 @@ sub sub_page_js {
 	var ptr = 0;
 	for (i=1;i<total;i++) {
 	    var partid = formname["q_"+i].value;
-	    var selopt = formname["GD_SEL"+i+"_"+partid];
-	    if (selopt[0].selected) {
+	    if (formname["GD_SEL"+i+"_"+partid][0].selected) {
 		var points = formname["GD_BOX"+i+"_"+partid].value;
 		var status = formname["solved"+i+"_"+partid].value;
 		if (points == "" && status != "correct_by_student") {
@@ -834,8 +961,8 @@ sub sub_page_kw_js {
     if (nret==null) return;
     formname.keywords.value = nret;
 
-    formname.refresh.value = "on";
     if (formname.keywords.value != "") {
+	formname.refresh.value = "on";
 	formname.submit();
     }
     return;
@@ -862,10 +989,9 @@ sub sub_page_kw_js {
     }
     var nret = prompt("Add selection to keyword list? Edit if desired.",cleantxt);
     if (nret==null) return;
-    var curlist = document.SCORE.keywords.value;
-    document.SCORE.keywords.value = curlist+" "+nret;
-    document.SCORE.refresh.value = "on";
+    document.SCORE.keywords.value = document.SCORE.keywords.value+" "+nret;
     if (document.SCORE.keywords.value != "") {
+	document.SCORE.refresh.value = "on";
 	document.SCORE.submit();
     }
     return;
@@ -882,8 +1008,7 @@ sub sub_page_kw_js {
     var Nmsg  = msgform.savemsgN.value;
     savedMsgHeader(Nmsg,usrctr,fullname);
     var subject = msgform.msgsub.value;
-    var rtrchk  = document.SCORE["includemsg"+usrctr];
-    var msgchk = rtrchk.value;
+    var msgchk = document.SCORE["includemsg"+usrctr].value;
     re = /msgsub/;
     var shwsel = "";
     if (re.test(msgchk)) { shwsel = "checked" }
@@ -895,8 +1020,7 @@ sub sub_page_kw_js {
 	shwsel = "";
 	if (re.test(msgchk)) { shwsel = "checked" }
 	var message = document.SCORE["savemsg"+i].value;
-	var shownOnce = document.SCORE["shownOnce"+i].value;
-	message = (shownOnce == 0 ? checkEntities(message) : message);
+	message = (document.SCORE["shownOnce"+i].value == 0 ? checkEntities(message) : message);
 	displaySavedMsg(i,message,shwsel); //I do not get it. w/o checkEntities on saved messages,
 	                                   //any &lt; is already converted to <, etc. However, only once!!
     }
@@ -932,7 +1056,6 @@ sub sub_page_kw_js {
 	height = 600;
 	scrollbar = "yes";
     }
-//    if (window.pWin) {window.pWin.close(); window.pWin=null}
     var xpos = (screen.width-600)/2;
     xpos = (xpos < 0) ? '0' : xpos;
     var ypos = (screen.height-height)/2-30;
@@ -941,6 +1064,7 @@ sub sub_page_kw_js {
     pWin = window.open('', 'MessageCenter', 'toolbar=no,location=no,scrollbars='+scrollbar+',screenx='+xpos+',screeny='+ypos+',width=600,height='+height);
     pWin.focus();
     pDoc = pWin.document;
+    pDoc.open('text/html','replace');
     pDoc.write("<html><head>");
     pDoc.write("<title>Message Central</title>");
 
@@ -1027,6 +1151,7 @@ sub sub_page_kw_js {
     pDoc.write("<input type=\\"button\\" value=\\"Cancel\\" onClick=\\"self.close()\\"><br><br>");
     pDoc.write("</form>");
     pDoc.write("</body></html>");
+    pDoc.close();
 }
 
 //====================== Script for keyword highlight options ==============
@@ -1070,6 +1195,7 @@ sub sub_page_kw_js {
     hwdWin = window.open('', 'KeywordHighlightCentral', 'toolbar=no,location=no,scrollbars=no,width=400,height=300,screenx='+xpos+',screeny='+ypos);
     hwdWin.focus();
     var hDoc = hwdWin.document;
+    hDoc.open('text/html','replace');
     hDoc.write("<html><head>");
     hDoc.write("<title>Highlight Central</title>");
 
@@ -1118,6 +1244,7 @@ sub sub_page_kw_js {
     hDoc.write("<input type=\\"button\\" value=\\"Cancel\\" onClick=\\"self.close()\\"><br><br>");
     hDoc.write("</form>");
     hDoc.write("</body></html>");
+    hDoc.close();
   }
 
 </script>
@@ -1183,27 +1310,46 @@ sub gradeBox {
 }
 
 sub show_problem {
-    my ($request,$symb,$uname,$udom,$removeform,$viewon) = @_;
-    my $rendered=&Apache::loncommon::get_student_view($symb,$uname,$udom,
-						      $ENV{'request.course.id'});
+    my ($request,$symb,$uname,$udom,$removeform,$viewon,$mode) = @_;
+    my $rendered;
+    if ($mode eq 'both' or $mode eq 'text') {
+	$rendered=&Apache::loncommon::get_student_view($symb,$uname,$udom,
+					     $ENV{'request.course.id'});
+    }
     if ($removeform) {
 	$rendered=~s|<form(.*?)>||g;
 	$rendered=~s|</form>||g;
 	$rendered=~s|name="submit"|name="would_have_been_submit"|g;
     }
-    my $companswer=&Apache::loncommon::get_student_answers($symb,$uname,$udom,
-							   $ENV{'request.course.id'});
+    my $companswer;
+    if ($mode eq 'both' or $mode eq 'answer') {
+	$companswer=&Apache::loncommon::get_student_answers($symb,$uname,$udom,
+						    $ENV{'request.course.id'});
+    }
     if ($removeform) {
 	$companswer=~s|<form(.*?)>||g;
 	$companswer=~s|</form>||g;
-	$rendered=~s|name="submit"|name="would_have_been_submit"|g;
+	$companswer=~s|name="submit"|name="would_have_been_submit"|g;
     }
     my $result.='<table border="0" width="100%"><tr><td bgcolor="#777777">';
     $result.='<table border="0" width="100%">';
-    $result.='<tr><td bgcolor="#e6ffff"><b> View of the problem - '.$ENV{'form.fullname'}.
-	'</b></td></tr>' if ($viewon);
-    $result.='<tr><td bgcolor="#ffffff">'.$rendered.'<br />';
-    $result.='<b>Correct answer:</b><br />'.$companswer;
+    if ($viewon) {
+	$result.='<tr><td bgcolor="#e6ffff"><b> ';
+	if ($mode eq 'both' or $mode eq 'text') {
+	    $result.='View of the problem - ';
+	} else {
+	    $result.='Correct answer: ';
+	}
+	$result.=$ENV{'form.fullname'}.'</b></td></tr>';
+    }
+    if ($mode eq 'both') {
+	$result.='<tr><td bgcolor="#ffffff">'.$rendered.'<br />';
+	$result.='<b>Correct answer:</b><br />'.$companswer;
+    } elsif ($mode eq 'text') {
+	$result.='<tr><td bgcolor="#ffffff">'.$rendered;
+    } elsif ($mode eq 'answer') {
+	$result.='<tr><td bgcolor="#ffffff">'.$companswer;
+    }
     $result.='</td></tr></table>';
     $result.='</td></tr></table><br />';
     return $result;
@@ -1252,8 +1398,16 @@ sub submission {
 
 	# option to display problem, only once else it cause problems 
         # with the form later since the problem has a form.
-	if ($ENV{'form.vProb'} eq 'yes' or !$ENV{'form.vProb'}) {
-	    $request->print(&show_problem($request,$symb,$uname,$udom,0,1));
+	if ($ENV{'form.vProb'} eq 'yes' or $ENV{'form.vAns'} eq 'yes') {
+	    my $mode;
+	    if ($ENV{'form.vProb'} eq 'yes' && $ENV{'form.vAns'} eq 'yes') {
+		$mode='both';
+	    } elsif ($ENV{'form.vProb'} eq 'yes') {
+		$mode='text';
+	    } elsif ($ENV{'form.vAns'} eq 'yes') {
+		$mode='answer';
+	    }
+	    $request->print(&show_problem($request,$symb,$uname,$udom,0,1,$mode));
 	}
 	
 	# kwclr is the only variable that is guaranteed to be non blank 
@@ -1288,6 +1442,7 @@ sub submission {
 			'<input type="hidden" name="url"        value="'.$url.'" />'."\n".
 			'<input type="hidden" name="showgrading" value="'.$ENV{'form.showgrading'}.'" />'."\n".
 			'<input type="hidden" name="vProb"      value="'.$ENV{'form.vProb'}.'" />'."\n".
+			'<input type="hidden" name="vAns"       value="'.$ENV{'form.vAns'}.'" />'."\n".
 			'<input type="hidden" name="lastSub"    value="'.$ENV{'form.lastSub'}.'" />'."\n".
 			'<input type="hidden" name="section"    value="'.$ENV{'form.section'}.'">'."\n".
 			'<input type="hidden" name="submitonly" value="'.$ENV{'form.submitonly'}.'">'."\n".
@@ -1302,6 +1457,9 @@ sub submission {
 			    '<input type="hidden" name="msgsub"   value="'.$ENV{'form.msgsub'}.'" />'."\n".
 			    '<input type="hidden" name="shownSub" value="0" />'."\n".
 			    '<input type="hidden" name="savemsgN" value="'.$ENV{'form.savemsgN'}.'" />'."\n");
+	    foreach my $partid (&Apache::loncommon::get_env_multiple('form.vPart')) {
+		$request->print('<input type="hidden" name="vPart" value="'.$partid.'" />'."\n");
+	    }
 	}
 	
 	my ($cts,$prnmsg) = (1,'');
@@ -1338,22 +1496,29 @@ KEYWORDS
         }
     }
 
-    if ($ENV{'form.vProb'} eq 'all') {
+    if ($ENV{'form.vProb'} eq 'all' or $ENV{'form.vAns'} eq 'all') {
 	$request->print('<br /><br /><br />') if ($counter > 0);
-	$request->print(&show_problem($request,$symb,$uname,$udom,1,1));
+	my $mode;
+	if ($ENV{'form.vProb'} eq 'all' && $ENV{'form.vAns'} eq 'all') {
+	    $mode='both';
+	} elsif ($ENV{'form.vProb'} eq 'all' ) {
+	    $mode='text';
+	} elsif ($ENV{'form.vAns'} eq 'all') {
+	    $mode='answer';
+	}
+	$request->print(&show_problem($request,$symb,$uname,$udom,1,1,$mode));
     }
+
     my %record = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);
 
-    my ($partlist,$handgrade) = &response_type($url,$symb);
+    my ($partlist,$handgrade,$responseType) = &response_type($url,$symb);
 
     # Display student info
     $request->print(($counter == 0 ? '' : '<br />'));
     my $result='<table border="0" width=100%><tr><td bgcolor="#777777">'."\n".
 	'<table border="0" width=100%><tr bgcolor="#edffff"><td>'."\n";
 
-    $result.='<b>Fullname: </b>'.$ENV{'form.fullname'}.
-	'<font color="#999999">&nbsp; &nbsp;Username: '.$uname.
-	($ENV{'user.domain'} eq $udom ? '' : ' ('.$udom.')').'</font><br />'."\n";
+    $result.='<b>Fullname: </b>'.&nameUserString(undef,$ENV{'form.fullname'},$uname,$udom).'<br />'."\n";
     $result.='<input type="hidden" name="name'.$counter.
 	'" value="'.$ENV{'form.fullname'}.'" />'."\n";
 
@@ -1393,8 +1558,10 @@ KEYWORDS
 		    $result.=$$fullname{$_}.'&nbsp; &nbsp; &nbsp;';
 		}
                 $result.='<br />'."\n";
+		my ($part)=split(/\./,$_);
 		$result.='<input type="hidden" name="collaborator'.$counter.
-		    '" value="'.(join ':',@goodcollaborators).'" />'."\n";
+		    '" value="'.$part.':'.(join ':',@goodcollaborators).'" />'.
+		    "\n";
 	    }
 	    if (scalar(@badcollaborators) > 0) {
 		$result.='<table border="0"><tr bgcolor="#ffbbbb"><td>';
@@ -1420,73 +1587,78 @@ KEYWORDS
     #             (3) Last submission plus the parts info
     #             (4) The whole record for this student
     if ($ENV{'form.lastSub'} =~ /^(lastonly|hdgrade)$/) {
-	if ($ENV{'form.'.$uname.':'.$udom.':submitted_by'}) {
-	    my $submitby=''.
-		'<b>Collaborative submission by: </b>'.
-		'<a href="javascript:viewSubmitter(\''.
-		$ENV{'form.'.$uname.':'.$udom.':submitted_by'}.
-		'\')"; TARGET=_self>'.
-		$$fullname{$ENV{'form.'.$uname.':'.$udom.':submitted_by'}}.'</a>';
-	    $request->print($submitby);
-	} else {
-	    my ($string,$timestamp)= &get_last_submission (\%record);
-	    my $lastsubonly=''.
-		($$timestamp eq '' ? '' : '<b>Date Submitted:</b> '.
-		 $$timestamp)."</td></tr>\n";
-	    if ($$timestamp eq '') {
-		$lastsubonly.='<tr><td bgcolor="#ffffe6">'.$$string[0]; 
-	    } else {
-		for my $part (sort keys(%$handgrade)) {
-		    my ($responsetype,$foo) = split(/:/,$$handgrade{$part});
-		    my ($partid,$respid) = split(/_/,$part);
-		    if (!exists($record{'resource.'.$partid.'.'.$respid.'.submission'})) {
+	my ($string,$timestamp)= &get_last_submission(\%record);
+	my $lastsubonly=''.
+	    ($$timestamp eq '' ? '' : '<b>Date Submitted:</b> '.
+	     $$timestamp)."</td></tr>\n";
+	if ($$timestamp eq '') {
+	    $lastsubonly.='<tr><td bgcolor="#ffffe6">'.$$string[0]; 
+	} else {
+	    my %seenparts;
+	    for my $part (sort keys(%$handgrade)) {
+		my ($partid,$respid) = split(/_/,$part);
+		if ($ENV{"form.$uname:$udom:$partid:submitted_by"}) {
+		    if (exists($seenparts{$partid})) { next; }
+		    $seenparts{$partid}=1;
+		    my $submitby='<b>Part '.$partid.
+			' Collaborative submission by: </b>'.
+			'<a href="javascript:viewSubmitter(\''.
+			$ENV{"form.$uname:$udom:$partid:submitted_by"}.
+			'\')"; TARGET=_self>'.
+			$$fullname{$ENV{"form.$uname:$udom:$partid:submitted_by"}}.'</a><br />';
+		    $request->print($submitby);
+		    next;
+		}
+		my $responsetype = $responseType->{$partid}->{$respid};
+		if (!exists($record{"resource.$partid.$respid.submission"})) {
+		    $lastsubonly.='<tr><td bgcolor="#ffffe6"><b>Part '.
+			$partid.'</b> <font color="#999999">( ID '.$respid.
+			' )</font>&nbsp; &nbsp;'.
+			'<font color="red">Nothing submitted - no attempts</font><br /><br />';
+		    next;
+		}
+		foreach (@$string) {
+		    my ($partid,$respid) = /^resource\.([^\.]*)\.([^\.]*)\.submission/;
+		    if ($part ne ($partid.'_'.$respid)) { next; }
+		    my ($ressub,$subval) = split(/:/,$_,2);
+		    # Similarity check
+		    my $similar='';
+		    if($ENV{'form.checkPlag'}){
+			my ($oname,$odom,$ocrsid,$oessay,$osim)=
+			    &most_similar($uname,$udom,$subval);
+			if ($osim) {
+			    $osim=int($osim*100.0);
+			    $similar="<hr /><h3><font color=\"#FF0000\">Essay".
+				" is $osim% similar to an essay by ".
+				&Apache::loncommon::plainname($oname,$odom).
+				'</font></h3><blockquote><i>'.
+				&keywords_highlight($oessay).
+				'</i></blockquote><hr />';
+			}
+		    }
+		    my $order=&get_order($partid,$respid,$symb,$uname,$udom);
+		    if ($ENV{'form.lastSub'} eq 'lastonly' || 
+			($ENV{'form.lastSub'} eq 'hdgrade' && 
+			 $$handgrade{$part} eq 'yes')) {
 			$lastsubonly.='<tr><td bgcolor="#ffffe6"><b>Part '.
 			    $partid.'</b> <font color="#999999">( ID '.$respid.
-			    ' )</font>&nbsp; &nbsp;'.
-			    '<font color="red">Nothing submitted - no attempts</font><br /><br />';
- 		    } else {
-			foreach (@$string) {
-			    my ($partid,$respid) = /^resource\.(\w+)\.(\w+)\.submission/;
-			    if ($part eq ($partid.'_'.$respid)) {
-				my ($ressub,$subval) = split(/:/,$_,2);
-                            # Similarity check
-				my $similar='';
-				my ($oname,$odom,$ocrsid,$oessay,$osim)=&most_similar($uname,$udom,$subval);
-				if ($osim) {
-				    $osim=int($osim*100.0);
-				    $similar='<hr /><h3><font color="#FF0000">Essay is '.$osim.
-					'% similar to an essay by '.&Apache::loncommon::plainname($oname,$odom).
-					'</font></h3><blockquote><i>'.
-					&keywords_highlight($oessay).'</i></blockquote><hr />';
-				}
-				$lastsubonly.='<tr><td bgcolor="#ffffe6"><b>Part '.
-				    $partid.'</b> <font color="#999999">( ID '.$respid.
-				    ' )</font>&nbsp; &nbsp;'.
-				    ($record{"resource.$partid.$respid.uploadedurl"}?
-				     '<a href="'.
-				     &Apache::lonnet::tokenwrapper($record{"resource.$partid.$respid.uploadedurl"}).
-				     '"><img src="/adm/lonIcons/unknown.gif" border=0"> File uploaded by student</a> '.
-				     '<font color="red" size="1">Like all files provided by users, '.
-				     'this file may contain virusses</font><br />':'').
-				     '<b>Submitted Answer: </b>'.($responsetype =~ /^(essay|option)$/ ? 
-								  '<blockquote>' : '').
-				     &cleanRecord($subval,$responsetype,$symb).
-				     ($responsetype =~ /^(essay|option)$/ ? '</blockquote><br />' : 
-				      '<br /><br />').$similar."\n"
-				     if ($ENV{'form.lastSub'} eq 'lastonly' || 
-					 ($ENV{'form.lastSub'} eq 'hdgrade' && 
-					  $$handgrade{$part} =~ /:yes$/));
-			    }
+			    ' )</font>&nbsp; &nbsp;';
+			if ($record{"resource.$partid.$respid.uploadedurl"}) {
+			    $lastsubonly.='<a href="'.&Apache::lonnet::tokenwrapper($record{"resource.$partid.$respid.uploadedurl"}).'"><img src="/adm/lonIcons/unknown.gif" border=0"> File uploaded by student</a> <font color="red" size="1">Like all files provided by users, this file may contain virusses</font><br />';
 			}
+			$lastsubonly.='<b>Submitted Answer: </b>'.
+			    &cleanRecord($subval,$responsetype,$symb,$partid,
+					 $respid,\%record,$order);
+			if ($similar) {$lastsubonly.="<br /><br />$similar\n";}
 		    }
 		}
 	    }
-	    $lastsubonly.='</td></tr><tr bgcolor="#ffffff"><td>'."\n";
-	    $request->print($lastsubonly);
 	}
+	$lastsubonly.='</td></tr><tr bgcolor="#ffffff"><td>'."\n";
+	$request->print($lastsubonly);
     } elsif ($ENV{'form.lastSub'} eq 'datesub') {
 	my (undef,$responseType,undef,$parts) = &showResourceInfo($url);
-	$request->print(&displaySubByDates(\$symb,\%record,$parts,$responseType,$checkIcon));
+	$request->print(&displaySubByDates($symb,\%record,$parts,$responseType,$checkIcon,$uname,$udom));
     } elsif ($ENV{'form.lastSub'} =~ /^(last|all)$/) {
 	$request->print(&Apache::loncommon::get_previous_attempt($symb,$uname,$udom,
 								 $ENV{'request.course.id'},
@@ -1519,7 +1691,6 @@ KEYWORDS
 	    $msgfor .= ', '.(join ', ',@col_fullnames).' and '.$lastone.'.';
 	}
 	$msgfor =~ s/\'/\\'/g; #' stupid emacs - no! javascript
-#	$result.='<tr><td bgcolor="#ffffff">'."\n".
 	$result='<input type="hidden" name="includemsg'.$counter.'" value="" />'."\n".
 	    '<input type="hidden" name="newmsg'.$counter.'" value="" />'."\n";
 	$result.='&nbsp;<a href="javascript:msgCenter(document.SCORE,'.$counter.
@@ -1534,17 +1705,21 @@ KEYWORDS
 
     my %seen = ();
     my @partlist;
+    my @gradePartRespid;
     for (sort keys(%$handgrade)) {
 	my ($partid,$respid) = split(/_/);
 	next if ($seen{$partid} > 0);
 	$seen{$partid}++;
 	next if ($$handgrade{$_} =~ /:no$/ && $ENV{'form.lastSub'} =~ /^(hdgrade)$/);
 	push @partlist,$partid;
+	push @gradePartRespid,$partid.'.'.$respid;
 
 	$request->print(&gradeBox($request,$symb,$uname,$udom,$counter,$partid,\%record));
     }
     $result='<input type="hidden" name="partlist'.$counter.
 	'" value="'.(join ":",@partlist).'" />'."\n";
+    $result.='<input type="hidden" name="gradePartRespid'.
+	'" value="'.(join ":",@gradePartRespid).'" />'."\n" if ($counter == 0);
     my $ctr = 0;
     while ($ctr < scalar(@partlist)) {
 	$result.='<input type="hidden" name="partid'.$counter.'_'.$ctr.'" value="'.
@@ -1566,11 +1741,11 @@ KEYWORDS
 	my $nsel = ($ENV{'form.NTSTU'} ne '' ? $ENV{'form.NTSTU'} : '1');
 	$ntstu =~ s/<option>$nsel</<option selected="on">$nsel</;
 	$endform.=$ntstu.'student(s) &nbsp;&nbsp;';
-	$endform.='<input type="button" value="Next" '.
-	    'onClick="javascript:checksubmit(this.form,\'Next\');" TARGET=_self> &nbsp;'."\n".
-	    '<input type="button" value="Previous" '.
-	    'onClick="javascript:checksubmit(this.form,\'Previous\');" TARGET=_self> &nbsp;';
-	$endform.='(Next and Previous do not save the scores.)'."\n" ;
+	$endform.='<input type="button" value="Previous" '.
+	    'onClick="javascript:checksubmit(this.form,\'Previous\');" TARGET=_self> &nbsp;'."\n".
+	    '<input type="button" value="Next" '.
+	    'onClick="javascript:checksubmit(this.form,\'Next\');" TARGET=_self> &nbsp;';
+	$endform.='(Next and Previous (student) do not save the scores.)'."\n" ;
 	$endform.='</td><tr></table></form>';
 	$endform.=&show_grading_menu_form($symb,$url);
 	$request->print($endform);
@@ -1656,18 +1831,21 @@ sub processHandGrade {
 							       $ENV{'form.msgsub'},$message);
 	    }
 	    if ($ENV{'form.collaborator'.$ctr}) {
-		my (@collaborators) = split(/:/,$ENV{'form.collaborator'.$ctr});
-		foreach (@collaborators) {
-		    my ($errorflag,$pts,$wgt) = 
-			&saveHandGrade($request,$url,$symb,$_,$udom,$ctr,$ENV{'form.unamedom'.$ctr});
-		    if ($errorflag eq 'not_allowed') {
-			$request->print("<font color=\"red\">Not allowed to modify grades for $_:$udom</font>");
-			next;
-		    } else {
-			if ($message ne '') {
-			    $msgstatus = &Apache::lonmsg::user_normal_msg ($_,$udom,
-									   $ENV{'form.msgsub'},
-									   $message);
+		my @collabstrs=&Apache::loncommon::get_env_multiple("form.collaborator$ctr");
+		foreach my $collabstr (@collabstrs) {
+		    my ($part,@collaborators) = split(/:/,$collabstr);
+		    foreach (@collaborators) {
+			my ($errorflag,$pts,$wgt) = 
+			    &saveHandGrade($request,$url,$symb,$_,$udom,$ctr,
+					   $ENV{'form.unamedom'.$ctr},$part);
+			if ($errorflag eq 'not_allowed') {
+			    $request->print("<font color=\"red\">Not allowed to modify grades for $_:$udom</font>");
+			    next;
+			} else {
+			    if ($message ne '') {
+				$msgstatus = &Apache::lonmsg::user_normal_msg($_,$udom,$ENV{'form.msgsub'},$message);
+			    }
+			    
 			}
 		    }
 		}
@@ -1770,21 +1948,32 @@ sub processHandGrade {
 	}
     }
     $ctr = 0;
-    my ($partlist,$handgrade) = &response_type($ENV{'form.url'},$symb);
     @parsedlist = reverse @parsedlist if ($button eq 'Previous');
+    my ($partlist) = &response_type($url);
     foreach my $student (@parsedlist) {
+	my $submitonly=$ENV{'form.submitonly'};
 	my ($uname,$udom) = split(/:/,$student);
-	if ($ENV{'form.submitonly'} eq 'yes') {
-	    my (%status) = &student_gradeStatus($ENV{'form.url'},$symb,$udom,$uname,$partlist) ;
-	    my $statusflg = '';
+	if ($submitonly =~ /^(yes|graded|incorrect)$/) {
+#	    my %record = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);
+	    my %status=&student_gradeStatus($url,$symb,$udom,$uname,$partlist);
+	    my $submitted = 0;
+	    my $graded = 1;
 	    foreach (keys(%status)) {
-		$statusflg = 1 if ($status{$_} ne 'nothing');
-		my ($foo,$partid,$foo1) = split(/\./);
-		$statusflg = '' if ($status{'resource.'.$partid.'.submitted_by'} ne '');
+		$submitted = 1 if ($status{$_} ne 'nothing');
+		$graded = 0 if ($status{$_} =~ /^correct/);
+		my ($foo,$partid,$foo1) = split(/\./,$_);
+		if ($status{'resource.'.$partid.'.submitted_by'} ne '') {
+		    $submitted = 0;
+		}
 	    }
-	    next if ($statusflg eq '');
+	    next if (!$submitted && ($submitonly eq 'yes' ||
+				     $submitonly eq 'incorrect' ||
+				     $submitonly eq 'graded'));
+	    next if (!$graded && ($submitonly eq 'graded' ||
+				  $submitonly eq 'incorrect'));
 	}
 	push @nextlist,$student if ($ctr < $ntstu);
+	last if ($ctr == $ntstu);
 	$ctr++;
     }
 
@@ -1811,7 +2000,7 @@ sub processHandGrade {
 
 #---- Save the score and award for each student, if changed
 sub saveHandGrade {
-    my ($request,$url,$symb,$stuname,$domain,$newflg,$submitter) = @_;
+    my ($request,$url,$symb,$stuname,$domain,$newflg,$submitter,$part) = @_;
     my $usec = &Apache::lonnet::getsection($domain,$stuname,
 					   $ENV{'request.course.id'});
     if (!&canmodify($usec)) { return('not_allowed'); }
@@ -1819,6 +2008,8 @@ sub saveHandGrade {
     my %newrecord  = ();
     my ($pts,$wgt) = ('','');
     foreach (split(/:/,$ENV{'form.partlist'.$newflg})) {
+	#collaborator may vary for different parts
+	if ($submitter && $_ ne $part) { next; }
 	my $dropMenu = $ENV{'form.GD_SEL'.$newflg.'_'.$_};
 	if ($dropMenu eq 'excused') {
 	    if ($record{'resource.'.$_.'.solved'} ne 'excused') {
@@ -1839,27 +2030,37 @@ sub saveHandGrade {
 	    $pts = ($ENV{'form.GD_BOX'.$newflg.'_'.$_} ne '' ? 
 		    $ENV{'form.GD_BOX'.$newflg.'_'.$_} : 
 		    $ENV{'form.RADVAL'.$newflg.'_'.$_});
-	    return 'no_score' if ($pts eq '' && $ENV{'form.GD_SEL'.$newflg.'_'.$_} eq '');
+	    if ($pts eq '' && $ENV{'form.GD_SEL'.$newflg.'_'.$_} eq '') {
+		next;
+	    }
 	    $wgt = $ENV{'form.WGT'.$newflg.'_'.$_} eq '' ? 1 : 
 		$ENV{'form.WGT'.$newflg.'_'.$_};
 	    my $partial= $pts/$wgt;
-	    next if ($partial eq $record{'resource.'.$_.'.awarded'}); #do not update score for part if not changed.
-	    $newrecord{'resource.'.$_.'.awarded'}  = $partial 
-		if ($record{'resource.'.$_.'.awarded'} ne $partial);
+	    if ($partial eq $record{'resource.'.$_.'.awarded'}) {
+		#do not update score for part if not changed.
+		next;
+	    }
+	    if ($record{'resource.'.$_.'.awarded'} ne $partial) {
+		$newrecord{'resource.'.$_.'.awarded'}  = $partial;
+	    }
 	    my $reckey = 'resource.'.$_.'.solved';
 	    if ($partial == 0) {
-		$newrecord{$reckey} = 'incorrect_by_override' 
-		    if ($record{$reckey} ne 'incorrect_by_override');
+		if ($record{$reckey} ne 'incorrect_by_override') {
+		    $newrecord{$reckey} = 'incorrect_by_override';
+		}
 	    } else {
-		$newrecord{$reckey} = 'correct_by_override' 
-		    if ($record{$reckey} ne 'correct_by_override');
+		if ($record{$reckey} ne 'correct_by_override') {
+		    $newrecord{$reckey} = 'correct_by_override';
+		}
+	    }	    
+	    if ($submitter && 
+		($record{'resource.'.$_.'.submitted_by'} ne $submitter)) {
+		$newrecord{'resource.'.$_.'.submitted_by'} = $submitter;
 	    }
-	    $newrecord{'resource.'.$_.'.submitted_by'} = $submitter 
-		if ($submitter && ($record{'resource.'.$_.'.submitted_by'} ne $submitter));
-	    $newrecord{'resource.'.$_.'.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";
+	    $newrecord{'resource.'.$_.'.regrader'}=
+		"$ENV{'user.name'}:$ENV{'user.domain'}";
 	}
     }
-
     if (scalar(keys(%newrecord)) > 0) {
 	&Apache::lonnet::cstore(\%newrecord,$symb,
 				$ENV{'request.course.id'},$domain,$stuname);
@@ -2059,14 +2260,15 @@ sub viewgrades {
 	'<input type="hidden" name="Status" value="'.$ENV{'form.Status'}.'" />'."\n".
 	'<input type="hidden" name="probTitle" value="'.$ENV{'form.probTitle'}.'" />'."\n";
 
-    $result.='<h3>Assign Common Grade To ';
+    my $sectionClass;
     if ($ENV{'form.section'} eq 'all') {
-	$result.='Class </h3>';
+	$sectionClass='Class </h3>';
     } elsif ($ENV{'form.section'} eq 'no') {
-	$result.='Students in no Section </h3>';
+	$sectionClass='Students in no Section </h3>';
     } else {
-	$result.='Students in Section '.$ENV{'form.section'}.'</h3>';
+	$sectionClass='Students in Section '.$ENV{'form.section'}.'</h3>';
     }
+    $result.='<h3>Assign Common Grade To '.$sectionClass;
     $result.= '<table border=0><tr><td bgcolor="#777777">'."\n".
 	'<table border=0><tr bgcolor="#ffffdd"><td>';
     #radio buttons/text box for assigning points for a section or class.
@@ -2080,7 +2282,7 @@ sub viewgrades {
 	my ($partid,$respid) = split (/_/,$_,2);
 	next if $seen{$partid};
 	$seen{$partid}++;
-	my ($responsetype,$handgrade)=split(/:/,$$handgrade{$_});
+	my $handgrade=$$handgrade{$_};
 	my $wgt = &Apache::lonnet::EXT('resource.'.$partid.'.weight',$symb);
 	$weight{$partid} = $wgt eq '' ? '1' : $wgt;
 
@@ -2107,7 +2309,6 @@ sub viewgrades {
 	    'onChange="javascript:writeRadText(\''.$partid.'\','.
 		$weight{$partid}.')"> '.
 	    '<option selected="on"> </option>'.
-#	    '<option>excused</option></select></td></tr>'."\n";
 	    '<option>excused</option>'.
 	    '<option>reset status</option></select></td></tr>'."\n";
 	$ctsparts++;
@@ -2119,21 +2320,14 @@ sub viewgrades {
 
     #table listing all the students in a section/class
     #header of table
-    $result.= '<h3>Assign Grade to Specific Students in ';
-    if ($ENV{'form.section'} eq 'all') {
-	$result.='the Class </h3>';
-    } elsif ($ENV{'form.section'} eq 'no') {
-	$result.='no Section </h3>';
-    } else {
-	$result.='Section '.$ENV{'form.section'}.'</h3>';
-    }
+    $result.= '<h3>Assign Grade to Specific Students in '.$sectionClass;
     $result.= '<table border=0><tr><td bgcolor="#777777">'."\n".
-	'<table border=0><tr bgcolor="#deffff">'.
-	'<td><b>Fullname</b> <font color="#999999">(Username)</font></td>'."\n";
-    my (@parts) = sort(&getpartlist($url));
+	'<table border=0><tr bgcolor="#deffff"><td>&nbsp;<b>No.</b>&nbsp;</td>'.
+	'<td>'.&nameUserString('header')."</td>\n";
+    my (@parts) = sort(&getpartlist($url,$symb));
     foreach my $part (@parts) {
 	my $display=&Apache::lonnet::metadata($url,$part.'.display');
-	$display =~ s/^Number of Attempts/Tries/; # makes the column narrower
+	$display =~ s|^Number of Attempts|Tries<br />|; # makes the column narrower
 	if  (!$display) { $display = &Apache::lonnet::metadata($url,$part.'.name'); }
 	if ($display =~ /^Partial Credit Factor/) {
 	    my ($partid) = &split_part_type($part);
@@ -2154,13 +2348,13 @@ sub viewgrades {
 	my $uname = $_;
 	$uname=~s/:/_/;
 	$result.='<input type="hidden" name="ctr'.$ctr.'" value="'.$uname.'" />'."\n";
-	$result.=&viewstudentgrade($url,$symb,$ENV{'request.course.id'},
-				   $_,$$fullname{$_},\@parts,\%weight);
 	$ctr++;
+	$result.=&viewstudentgrade($url,$symb,$ENV{'request.course.id'},
+				   $_,$$fullname{$_},\@parts,\%weight,$ctr);
     }
     $result.='</table></td></tr></table>';
     $result.='<input type="hidden" name="total" value="'.$ctr.'" />'."\n";
-    $result.='<input type="button" value="Submit Changes" '.
+    $result.='<input type="button" value="Save" '.
 	'onClick="javascript:submit();" TARGET=_self /></form>'."\n";
     if (scalar(%$fullname) eq 0) {
 	my $colspan=3+scalar(@parts);
@@ -2173,11 +2367,11 @@ sub viewgrades {
 
 #--- call by previous routine to display each student
 sub viewstudentgrade {
-    my ($url,$symb,$courseid,$student,$fullname,$parts,$weight) = @_;
+    my ($url,$symb,$courseid,$student,$fullname,$parts,$weight,$ctr) = @_;
     my ($uname,$udom) = split(/:/,$student);
     $student=~s/:/_/;
     my %record=&Apache::lonnet::restore($symb,$courseid,$udom,$uname);
-    my $result='<tr bgcolor="#ffffdd"><td>'.
+    my $result='<tr bgcolor="#ffffdd"><td align="right">'.$ctr.'&nbsp;</td><td>&nbsp;'.
 	'<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.
 	'\')"; TARGET=_self>'.$fullname.'</a> '.
 	'<font color="#999999">('.$uname.($ENV{'user.domain'} eq $udom ? '' : ':'.$udom).')</font></td>'."\n";
@@ -2197,17 +2391,13 @@ sub viewstudentgrade {
 	    $status = 'nothing' if ($status eq '');
 	    $result.='<input type="hidden" name="'.'GD_'.$student.'_'.
 		$part.'_solved_s" value="'.$status.'" />'."\n";
-	    $result.='<td align="middle"><select name="'.
+	    $result.='<td align="middle">&nbsp;<select name="'.
 		'GD_'.$student.'_'.$part.'_solved" '.
 		'onChange="javascript:changeOneScore(\''.$part.'\',\''.$student.'\')" >'."\n";
-#	    my $optsel = '<option selected="on"> </option><option>excused</option>'."\n";
-#	    $optsel = '<option> </option><option selected="on">excused</option>'."\n"
-#		if ($status eq 'excused');
-#	    $result.=$optsel;
 	    $result.= (($status eq 'excused') ? '<option> </option><option selected="on">excused</option>' 
 		: '<option selected="on"> </option><option>excused</option>')."\n";
 	    $result.='<option>reset status</option>';
-	    $result.="</select></td>\n";
+	    $result.="</select>&nbsp;</td>\n";
 	} else {
 	    $result.='<input type="hidden" name="'.
 		'GD_'.$student.'_'.$part.'_'.$type.'_s" value="'.$score.'" />'.
@@ -2231,9 +2421,11 @@ sub editgrades {
     my $title='<h3><font color="#339933">Current Grade Status</font></h3>';
     $title.='<font size=+1><b>Current Resource: </b>'.$ENV{'form.probTitle'}.'</font><br />'."\n";
     $title.='<font size=+1><b>Section: </b>'.$ENV{'form.section'}.'</font>'."\n";
+
     my $result= '<table border="0"><tr><td bgcolor="#777777">'."\n";
     $result.= '<table border="0"><tr bgcolor="#deffff">'.
-	'<td rowspan=2><b>Username</b></td><td rowspan=2><b>Domain</b></td><td rowspan=2><b>Fullname</b></td>'."\n";
+	'<td rowspan=2 valign="center">&nbsp;<b>No.</b>&nbsp;</td>'.
+	'<td rowspan=2 valign="center">'.&nameUserString('header')."</td>\n";
 
     my %scoreptr = (
 		    'correct'  =>'correct_by_override',
@@ -2249,7 +2441,7 @@ sub editgrades {
     my %columns = ();
     my ($i,$ctr,$count,$rec_update) = (0,0,0,0);
 
-    my (@parts) = sort(&getpartlist($url));
+    my (@parts) = sort(&getpartlist($url,$symb));
     my $header;
     while ($ctr < $ENV{'form.totalparts'}) {
 	my $partid = $ENV{'form.partid_'.$ctr};
@@ -2283,6 +2475,7 @@ sub editgrades {
     $result .= $header;
     $result .= '</tr>'."\n";
     my $noupdate;
+    my ($updateCtr,$noupdateCtr) = (1,1);
     for ($i=0; $i<$ENV{'form.total'}; $i++) {
 	my $line;
 	my $user = $ENV{'form.ctr'.$i};
@@ -2291,12 +2484,10 @@ sub editgrades {
 	my ($uname,$udom)=split(/_/,$user);
 	my %newrecord;
 	my $updateflag = 0;
-	$line .= '<tr bgcolor="#ffffde"><td>'.$uname.'&nbsp;</td><td>'.
-	    $udom.'&nbsp;</td><td>'.
-		$$fullname{$usercolon}.'&nbsp;</td>';
+	$line .= '<td>'.&nameUserString(undef,$$fullname{$usercolon},$uname,$udom).'</td>';
 	my $usec=$classlist->{"$uname:$udom"}[5];
 	if (!&canmodify($usec)) {
-	    my $numcols=scalar(@partid)*(scalar(@parts)-1)*2;
+	    my $numcols=scalar(@partid)*4+2;
 	    $noupdate.=$line."<td colspan=\"$numcols\"><font color=\"red\">Not allowed to modify student</font></td></tr>";
 	    next;
 	}
@@ -2322,25 +2513,23 @@ sub editgrades {
 
 	    if ($dropMenu eq 'reset status' &&
 		$old_score ne '') { # ignore if no previous attempts => nothing to reset
-		print "reset status<br>";
 		$newrecord{'resource.'.$_.'.tries'} = 0;
 		$newrecord{'resource.'.$_.'.solved'} = '';
 		$newrecord{'resource.'.$_.'.award'} = '';
 		$newrecord{'resource.'.$_.'.awarded'} = 0;
 		$newrecord{'resource.'.$_.'.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";
 		$updateflag = 1;
+	    } elsif (!($old_part eq $partial && $old_score eq $score)) {
+		$updateflag = 1;
+		$newrecord{'resource.'.$_.'.awarded'}  = $partial if $partial ne '';
+		$newrecord{'resource.'.$_.'.solved'}   = $score;
+		$rec_update++;
 	    }
 
 	    $line .= '<td align="center">'.$old_aw.'&nbsp;</td>'.
 		'<td align="center">'.$awarded.
 		($score eq 'excused' ? $score : '').'&nbsp;</td>';
 
-	    if (!($old_part eq $partial && $old_score eq $score)) {
-		$updateflag = 1;
-		$newrecord{'resource.'.$_.'.awarded'}  = $partial if $partial ne '';
-		$newrecord{'resource.'.$_.'.solved'}   = $score;
-		$rec_update++;
-	    }
 
 	    my $partid=$_;
 	    foreach my $stores (@parts) {
@@ -2363,14 +2552,17 @@ sub editgrades {
 	    $count++;
 	    &Apache::lonnet::cstore(\%newrecord,$symb,$ENV{'request.course.id'},
 				    $udom,$uname);
-	    $result.=$line;
+	    $result.='<tr bgcolor="#ffffde"><td align="right">&nbsp;'.$updateCtr.'&nbsp;</td>'.$line;
+	    $updateCtr++;
 	} else {
-	    $noupdate.=$line;
+	    $noupdate.='<tr bgcolor="#ffffde"><td align="right">&nbsp;'.$noupdateCtr.'&nbsp;</td>'.$line;
+	    $noupdateCtr++;
 	}
     }
     if ($noupdate) {
-	my $numcols=(scalar(@partid)*(scalar(@parts)-1)*2)+3;
-	$result .= '<tr bgcolor="#ffffff"><td align="center" colspan="'.$numcols.'">No Changes Occured For the Students Below</td></tr>'.$noupdate;
+#	my $numcols=(scalar(@partid)*(scalar(@parts)-1)*2)+3;
+	my $numcols=scalar(@partid)*4+2;
+	$result .= '<tr bgcolor="#ffffff"><td align="center" colspan="'.$numcols.'">No Changes Occurred For the Students Below</td></tr>'.$noupdate;
     }
     $result .= '</table></td></tr></table>'."\n".
 	&show_grading_menu_form ($symb,$url);
@@ -2509,14 +2701,13 @@ to this page if the data selected is ins
 $javascript
 </script>
 ENDPICK
-    $request->print(&show_grading_menu_form($symb,$url));
     return '';
 
 }
 
 sub csvupload_fields {
-    my ($url) = @_;
-    my (@parts) = &getpartlist($url);
+    my ($url,$symb) = @_;
+    my (@parts) = &getpartlist($url,$symb);
     my @fields=(['username','Student Username'],['domain','Student Domain']);
     foreach my $part (sort(@parts)) {
 	my @datum;
@@ -2599,7 +2790,7 @@ sub csvuploadmap {
     &csvuploadmap_header($request,$symb,$url,$datatoken,$#records+1);
     my ($i,$keyfields);
     if (@records) {
-	my @fields=&csvupload_fields($url);
+	my @fields=&csvupload_fields($url,$symb);
 
 	if ($ENV{'form.upfile_associate'} eq 'reverse') {	
 	    &Apache::loncommon::csv_print_samples($request,\@records);
@@ -2649,7 +2840,9 @@ sub csvuploadassign {
     foreach my $grade (@gradedata) {
 	my %entries=&Apache::loncommon::record_sep($grade);
 	my $username=$entries{$fields{'username'}};
+	$username=~s/\s//g;
 	my $domain=$entries{$fields{'domain'}};
+	$domain=~s/\s//g;
 	if (!exists($$classlist{"$username:$domain"})) {
 	    push(@skipped,"$username:$domain");
 	    next;
@@ -2726,7 +2919,9 @@ LISTJAVASCRIPT
     $result.='<form action="/adm/grades" method="post" name="displayPage">'."\n";
     $result.='&nbsp;<b>Problems from:</b> <select name="selectpage">'."\n";
     my ($titles,$symbx) = &getSymbMap($request);
-    my ($curpage,$type,$mapId) = ($symb =~ /(.*?\.(page|sequence))___(\d+)___/); 
+    my ($curpage) =&Apache::lonnet::decode_symb($symb); 
+#    my ($curpage,$mapId) =&Apache::lonnet::decode_symb($symb); 
+#    my $type=($curpage =~ /\.(page|sequence)/);
     my $ctr=0;
     foreach (@$titles) {
 	my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
@@ -2746,7 +2941,7 @@ LISTJAVASCRIPT
     $result.='<input type="hidden" name="page" />'."\n".
 	'<input type="hidden" name="title" />'."\n";
 
-    $result.='&nbsp;<b>View Problems Text: </b><input type="radio" name="vProb" value="no" checked /> no '."\n".
+    $result.='&nbsp;<b>View Problems Text: </b><input type="radio" name="vProb" value="no" checked="on" /> no '."\n".
 	'<input type="radio" name="vProb" value="yes" /> yes '."<br>\n";
 
     $result.='&nbsp;<b>Submission Details: </b>'.
@@ -2762,34 +2957,33 @@ LISTJAVASCRIPT
 	'<input type="hidden" name="saveState" value="'.$ENV{'form.saveState'}.'" />'."<br />\n";
 
     $result.='&nbsp;<input type="button" '.
-	'onClick="javascript:checkPickOne(this.form);"value="Submit" /><br />'."\n";
+	'onClick="javascript:checkPickOne(this.form);"value="Next->" /><br />'."\n";
 
     $request->print($result);
 
-    my $studentTable.='&nbsp;<b>Select a student you wish to grade</b><br>'.
+    my $studentTable.='&nbsp;<b>Select a student you wish to grade and then click on the Next button.</b><br>'.
 	'<table border="0"><tr><td bgcolor="#777777">'.
 	'<table border="0"><tr bgcolor="#e6ffff">'.
-	'<td><b>&nbsp;Fullname <font color="#999999">(username)</font></b></td>'.
-	'<td><b>&nbsp;Fullname <font color="#999999">(username)</font></b></td>'.
-	'<td><b>&nbsp;Fullname <font color="#999999">(username)</font></b></td>'.
-	'<td><b>&nbsp;Fullname <font color="#999999">(username)</font></b></td></tr>';
+	'<td align="right">&nbsp;<b>No.</b></td>'.
+	'<td>'.&nameUserString('header').'</td>'.
+	'<td align="right">&nbsp;<b>No.</b></td>'.
+	'<td>'.&nameUserString('header').'</td></tr>';
  
     my (undef,undef,$fullname) = &getclasslist($getsec,'1');
     my $ptr = 1;
     foreach my $student (sort {lc($$fullname{$a}) cmp lc($$fullname{$b}) } keys %$fullname) {
 	my ($uname,$udom) = split(/:/,$student);
-	$studentTable.=($ptr%4 == 1 ? '<tr bgcolor="#ffffe6"><td>' : '</td><td>');
-	$studentTable.='<input type="radio" name="student" value="'.$student.'" /> '.$$fullname{$student}.
-	    '<font color="#999999"> ('.$uname.($udom eq $cdom ? '':':'.$udom).')</font>'."\n";
-	$studentTable.=($ptr%4 == 0 ? '</td></tr>' : '');
+	$studentTable.=($ptr%2 == 1 ? '<tr bgcolor="#ffffe6">' : '</td>');
+	$studentTable.='<td align="right">'.$ptr.'&nbsp;</td>';
+	$studentTable.='<td>&nbsp;<input type="radio" name="student" value="'.$student.'" /> '
+	    .&nameUserString(undef,$$fullname{$student},$uname,$udom)."\n";
+	$studentTable.=($ptr%2 == 0 ? '</td></tr>' : '');
 	$ptr++;
     }
-    $studentTable.='</td><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;' if ($ptr%4 == 2);
-    $studentTable.='</td><td>&nbsp;</td><td>&nbsp;' if ($ptr%4 == 3);
-    $studentTable.='</td><td>&nbsp;' if ($ptr%4 == 0);
+    $studentTable.='</td><td>&nbsp;</td><td>&nbsp;' if ($ptr%2 == 0);
     $studentTable.='</td></tr></table></td></tr></table>'."\n";
-    $studentTable.='<br /><input type="button" '.
-	'onClick="javascript:checkPickOne(this.form);"value="Submit" /></form>'."\n";
+    $studentTable.='<input type="button" '.
+	'onClick="javascript:checkPickOne(this.form);"value="Next->" /></form>'."\n";
 
     $studentTable.=&show_grading_menu_form($symb,$url);
     $request->print($studentTable);
@@ -2799,9 +2993,7 @@ LISTJAVASCRIPT
 
 sub getSymbMap {
     my ($request) = @_;
-    my $navmap = Apache::lonnavmaps::navmap-> new($ENV{'request.course.fn'}.'.db',
-						  $ENV{'request.course.fn'}.'_parms.db');
-    $navmap->init();
+    my $navmap = Apache::lonnavmaps::navmap->new();
 
     my %symbx = ();
     my @titles = ();
@@ -2841,15 +3033,13 @@ sub displayPage {
 	return;
     }
     my $result='<h3><font color="#339933">&nbsp;'.$ENV{'form.title'}.'</font></h3>';
-    $result.='<h3>&nbsp;Student: '.$$fullname{$ENV{'form.student'}}.
-	'<font color="#999999"> ('.$uname.($udom eq $cdom ? '':':'.$udom).')</font></h3>'."\n";
-
+    $result.='<h3>&nbsp;Student: '.&nameUserString(undef,$$fullname{$ENV{'form.student'}},$uname,$udom).
+	'</h3>'."\n";
     &sub_page_js($request);
     $request->print($result);
 
-    my $navmap = Apache::lonnavmaps::navmap-> new($ENV{'request.course.fn'}.'.db',
-						  $ENV{'request.course.fn'}.'_parms.db',1, 1);
-    my ($mapUrl, $id, $resUrl) = split(/___/, $ENV{'form.page'});
+    my $navmap = Apache::lonnavmaps::navmap->new();
+    my ($mapUrl, $id, $resUrl)=&Apache::lonnet::decode_symb($ENV{'form.page'});
     my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
 
     my $iterator = $navmap->getIterator($map->map_start(),
@@ -2883,7 +3073,6 @@ sub displayPage {
         if($curRes == $iterator->BEGIN_MAP) { $depth++; }
         if($curRes == $iterator->END_MAP) { $depth--; }
 
-#        if (ref($curRes) && $curRes->is_problem() && !$curRes->randomout) {
         if (ref($curRes) && $curRes->is_problem()) {
 	    my $parts = $curRes->parts();
             my $title = $curRes->compTitle();
@@ -2891,8 +3080,9 @@ sub displayPage {
 	    $studentTable.='<tr bgcolor="#ffffe6"><td align="center" valign="top" >'.$question.
 		(scalar(@{$parts}) == 1 ? '' : '<br>('.scalar(@{$parts}).'&nbsp;parts)').'</td>';
 	    $studentTable.='<td valign="top">';
-	    if ($ENV{'form.vProb'} eq 'yes') {
-		$studentTable.=&show_problem($request,$symbx,$uname,$udom,1);
+	    if ($ENV{'form.vProb'} eq 'yes' ) {
+		$studentTable.=&show_problem($request,$symbx,$uname,$udom,1,
+					     undef,'both');
 	    } else {
 		my $companswer = &Apache::loncommon::get_student_answers($symbx,$uname,$udom,$ENV{'request.course.id'});
 		$companswer =~ s|<form(.*?)>||g;
@@ -2913,9 +3103,16 @@ sub displayPage {
 		} else {
 		    my %responseType = ();
 		    foreach my $partid (@{$parts}) {
-			$responseType{$partid} = $curRes->responseType($partid);
+			my @responseIds =$curRes->responseIds($partid);
+			my @responseType =$curRes->responseType($partid);
+			my %responseIds;
+			for (my $i=0;$i<=$#responseIds;$i++) {
+			    $responseIds{$responseIds[$i]}=$responseType[$i];
+			}
+			$responseType{$partid} = \%responseIds;
 		    }
-		    $studentTable.= &displaySubByDates(\$symbx,\%record,$parts,\%responseType,$checkIcon);
+		    $studentTable.= &displaySubByDates($symbx,\%record,$parts,\%responseType,$checkIcon,$uname,$udom);
+
 		}
 	    } elsif ($ENV{'form.lastSub'} eq 'all') {
 		my $last = ($ENV{'form.lastSub'} eq 'last' ? 'last' : '');
@@ -2950,7 +3147,7 @@ sub displayPage {
 }
 
 sub displaySubByDates {
-    my ($symbx,$record,$parts,$responseType,$checkIcon) = @_;
+    my ($symb,$record,$parts,$responseType,$checkIcon,$uname,$udom) = @_;
     my $studentTable='<table border="0" width="100%"><tr><td bgcolor="#777777">'.
 	'<table border="0" width="100%"><tr bgcolor="#e6ffff">'.
 	'<td><b>Date/Time</b></td>'.
@@ -2958,33 +3155,62 @@ sub displaySubByDates {
 	'<td><b>Status&nbsp;</b></td></tr>';
     my ($version);
     my %mark;
+    my %orders;
     $mark{'correct_by_student'} = $checkIcon;
-    return '<br />&nbsp;<font color="red">Nothing submitted - no attempts</font><br />' 
-	if (!exists($$record{'1:timestamp'}));
+    if (!exists($$record{'1:timestamp'})) {
+	return '<br />&nbsp;<font color="red">Nothing submitted - no attempts</font><br />';
+    }
     for ($version=1;$version<=$$record{'version'};$version++) {
 	my $timestamp = scalar(localtime($$record{$version.':timestamp'}));
 	$studentTable.='<tr bgcolor="#ffffff" valign="top"><td>'.$timestamp.'</td>';
 	my @versionKeys = split(/\:/,$$record{$version.':keys'});
 	my @displaySub = ();
 	foreach my $partid (@{$parts}) {
-	    my @matchKey = grep /^resource\.$partid\..*?\.submission$/,@versionKeys;
+	    my @matchKey = sort(grep /^resource\.\Q$partid\E\..*?\.submission$/,@versionKeys);
 #	    next if ($$record{"$version:resource.$partid.solved"} eq '');
-	    $displaySub[0].=(exists $$record{$version.':'.$matchKey[0]}) ? 
-		'<b>Part&nbsp;'.$partid.'&nbsp;'.
-		($$record{"$version:resource.$partid.tries"} eq '' ? 'Trial&nbsp;not&nbsp;counted' :
-		 'Trial&nbsp;'.$$record{"$version:resource.$partid.tries"}).'</b>&nbsp; '.
-		 &cleanRecord($$record{$version.':'.$matchKey[0]},$$responseType{$partid},$$symbx).'<br />' : '';
-	    $displaySub[1].=(exists $$record{"$version:resource.$partid.award"}) ?
-		'<b>Part&nbsp;'.$partid.'</b> &nbsp;'.
-		lc($$record{"$version:resource.$partid.award"}).' '.
-		$mark{$$record{"$version:resource.$partid.solved"}}.'<br />' : '';
-	    $displaySub[2].=(exists $$record{"$version:resource.$partid.regrader"}) ?
-		$$record{"$version:resource.$partid.regrader"}.' (<b>Part:</b> '.$partid.')' : '';
-	}
-	$displaySub[2].=(exists $$record{"$version:resource.regrader"}) ?
-	    $$record{"$version:resource.regrader"} : '';
-	$studentTable.='<td>'.$displaySub[0].'&nbsp;</td><td>'.$displaySub[1].
-	    ($displaySub[2] eq '' ? '' : 'Manually graded by '.$displaySub[2]).'&nbsp;</td></tr>';
+	    foreach my $matchKey (@matchKey) {
+		if (exists $$record{$version.':'.$matchKey}) {
+		    my ($responseId)=($matchKey=~ /^resource\.\Q$partid\E\.(.*?)\.submission$/);
+		    $displaySub[0].='<b>Part&nbsp;'.$partid.'&nbsp;';
+		    $displaySub[0].='<font color="#999999">(ID&nbsp;'.
+			$responseId.')</font>&nbsp;';
+		    if ($$record{"$version:resource.$partid.tries"} eq '') {
+			$displaySub[0].='Trial&nbsp;not&nbsp;counted';
+		    } else {
+			$displaySub[0].='Trial&nbsp;'.
+			    $$record{"$version:resource.$partid.tries"};
+		    }
+		    my $responseType=$responseType->{$partid}->{$responseId};
+		    if (!exists($orders{$partid})) { $orders{$partid}={}; }
+		    if (!exists($orders{$partid}->{$responseId})) {
+			$orders{$partid}->{$responseId}=
+			    &get_order($partid,$responseId,$symb,$uname,$udom);
+		    }
+		    $displaySub[0].='</b>&nbsp; '.
+			&cleanRecord($$record{$version.':'.$matchKey},$responseType,$symb,$partid,$responseId,$record,$orders{$partid}->{$responseId},"$version:").'<br />';
+		}
+	    }
+	    if (exists $$record{"$version:resource.$partid.award"}) {
+		$displaySub[1].='<b>Part&nbsp;'.$partid.'</b> &nbsp;'.
+		    lc($$record{"$version:resource.$partid.award"}).' '.
+		    $mark{$$record{"$version:resource.$partid.solved"}}.
+		    '<br />';
+	    }
+	    if (exists $$record{"$version:resource.$partid.regrader"}) {
+		$displaySub[2].=$$record{"$version:resource.$partid.regrader"}.
+		    ' (<b>Part:</b> '.$partid.')';
+	    }
+	}
+	# needed because old essay regrader has not parts info
+	if (exists $$record{"$version:resource.regrader"}) {
+	    $displaySub[2].=$$record{"$version:resource.regrader"};
+	}
+	$studentTable.='<td>'.$displaySub[0].'&nbsp;</td><td>'.$displaySub[1];
+	if ($displaySub[2]) {
+	    $studentTable.='Manually graded by '.$displaySub[2];
+	}
+	$studentTable.='&nbsp;</td></tr>';
+    
     }
     $studentTable.='</table></td></tr></table>';
     return $studentTable;
@@ -3006,14 +3232,13 @@ sub updateGradeByPage {
 	return;
     }
     my $result='<h3><font color="#339933">&nbsp;'.$ENV{'form.title'}.'</font></h3>';
-    $result.='<h3>&nbsp;Student: '.$ENV{'form.fullname'}.
-	'<font color="#999999"> ('.$uname.($udom eq $cdom ? '':':'.$udom).')</font></h3>'."\n";
+    $result.='<h3>&nbsp;Student: '.&nameUserString(undef,$ENV{'form.fullname'},$uname,$udom).
+	'</h3>'."\n";
 
     $request->print($result);
 
-    my $navmap = Apache::lonnavmaps::navmap-> new($ENV{'request.course.fn'}.'.db',
-						  $ENV{'request.course.fn'}.'_parms.db',1, 1);
-    my ($mapUrl, $id, $resUrl) = split(/___/, $ENV{'form.page'});
+    my $navmap = Apache::lonnavmaps::navmap->new();
+    my ($mapUrl, $id, $resUrl) = &Apache::lonnet::decode_symb( $ENV{'form.page'});
     my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
 
     my $iterator = $navmap->getIterator($map->map_start(),
@@ -3062,7 +3287,6 @@ sub updateGradeByPage {
 		    $score = 'excused';
 		} elsif ($dropMenu eq 'reset status'
 			 && $ENV{'form.solved'.$question.'_'.$partid} ne '') { #update only if previous record exists
-		    print "got to reset = $ENV{'form.solved'.$question.'_'.$partid}:<br>";
 		    $newrecord{'resource.'.$partid.'.tries'} = 0;
 		    $newrecord{'resource.'.$partid.'.solved'} = '';
 		    $newrecord{'resource.'.$partid.'.award'} = '';
@@ -3136,7 +3360,7 @@ sub getSequenceDropDown {
     my ($request,$symb)=@_;
     my $result='<select name="selectpage">'."\n";
     my ($titles,$symbx) = &getSymbMap($request);
-    my ($curpage,$type,$mapId) = ($symb =~ /(.*?\.(page|sequence))___(\d+)___/); 
+    my ($curpage)=&Apache::lonnet::decode_symb($symb); 
     my $ctr=0;
     foreach (@$titles) {
 	my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
@@ -3152,13 +3376,16 @@ sub getSequenceDropDown {
 sub scantron_uploads {
     if (!-e $Apache::lonnet::perlvar{'lonScansDir'}) { return ''};
     my $result=	'<select name="scantron_selectfile">';
-    opendir(DIR,$Apache::lonnet::perlvar{'lonScansDir'});
-    my @files=sort(readdir(DIR));
+    my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
+    my $cname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
+    my @files=&Apache::lonnet::dirlist('userfiles',$cdom,$cname,
+				    &Apache::locommon::propath($cdom,$cname));
     foreach my $filename (@files) {
-	if ($filename eq '.' or $filename eq '..') { next; }
+	($filename)=split(/&/,$filename);
+	if ($filename!~/^scantron_orig_/) { next ; }
+	$filename=~s/^scantron_orig_//;
 	$result.="<option>$filename</option>\n";
     }
-    closedir(DIR);
     $result.="</select>";
     return $result;
 }
@@ -3186,9 +3413,11 @@ sub scantron_selectphase {
     my $file_selector=&scantron_uploads();
     my $format_selector=&scantron_scantab();
     my $result;
+    #FIXME allow instructor to be able to download the scantron file
+    # and to upload it,
     $result.= <<SCANTRONFORM;
 <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantro_process">
-  <input type="hidden" name="command" value="scantron_process" />
+  <input type="hidden" name="command" value="scantron_validate" />
   $default_form_data
   <table width="100%" border="0">
     <tr>
@@ -3214,11 +3443,18 @@ sub scantron_selectphase {
               Format of data file: $format_selector
 	    </td>
           </tr>
+          <tr bgcolor="#ffffe6">
+            <td>
+<!-- FIXME this is lazy, a single parse of the set should let me know what this is -->
+              Last line to expect an answer on: 
+                <input type="text" name="scantron_maxbubble" />
+	    </td>
+          </tr>
         </table>
       </td>
     </tr>
   </table>
-  <input type="submit" value="Submit" />
+  <input type="submit" value="Validate Scantron Records" />
 </form>
 $grading_menu_button
 SCANTRONFORM
@@ -3230,6 +3466,7 @@ sub get_scantron_config {
     my ($which) = @_;
     my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
     my %config;
+    #FIXME probably should move to XML it has already gotten a bit much now
     foreach my $line (<$fh>) {
 	my ($name,$descrip)=split(/:/,$line);
 	if ($name ne $which ) { next; }
@@ -3246,6 +3483,12 @@ sub get_scantron_config {
 	$config{'Qlength'}=$config[8];
 	$config{'Qoff'}=$config[9];
 	$config{'Qon'}=$config[10];
+	$config{'PaperID'}=$config[11];
+	$config{'PaperIDlength'}=$config[12];
+	$config{'FirstName'}=$config[13];
+	$config{'FirstNamelength'}=$config[14];
+	$config{'LastName'}=$config[15];
+	$config{'LastNamelength'}=$config[16];
 	last;
     }
     return %config;
@@ -3261,8 +3504,53 @@ sub username_to_idmap {
     return %idmap;
 }
 
+sub scantron_fixup_scanline {
+    my ($scantron_config,$scan_data,$line,$whichline,$field,$args)=@_;
+    if ($field eq 'ID') {
+	if (length($args->{'newid'}) > $$scantron_config{'IDlength'}) {
+	    return ($line,1,'New value to large');
+	}
+	if (length($args->{'newid'}) < $$scantron_config{'IDlength'}) {
+	    $args->{'newid'}=sprintf('%-'.$$scantron_config{'IDlength'}.'s',
+				     $args->{'newid'});
+	}
+	substr($line,$$scantron_config{'IDstart'}-1,
+	       $$scantron_config{'IDlength'})=$args->{'newid'};
+	if ($args->{'newid'}=~/^\s*$/) {
+	    &scan_data($scan_data,"$whichline.user",
+		       $args->{'username'}.':'.$args->{'domain'});
+	}
+    } elsif ($field eq 'answer') {
+	my $length=$scantron_config->{'Qlength'};
+	my $off=$scantron_config->{'Qoff'};
+	my $on=$scantron_config->{'Qon'};
+	my $answer=${off}x$length;
+	if ($args->{'response'} eq 'none') {
+	    &scan_data($scan_data,
+		       "$whichline.no_bubble.".$args->{'question'},'1');
+	} else {
+	    substr($answer,$args->{'response'},1)=$on;
+	    &scan_data($scan_data,
+		       "$whichline.no_bubble.".$args->{'question'},undef,'1');
+	}
+	my $where=$length*($args->{'question'}-1)+$scantron_config->{'Qstart'};
+	substr($line,$where-1,$length)=$answer;
+    }
+    return $line;
+}
+
+sub scan_data {
+    my ($scan_data,$key,$value,$delete)=@_;
+    my $filename=$ENV{'form.scantron_selectfile'};
+    if (defined($value)) {
+	$scan_data->{$filename.'_'.$key} = $value;
+    }
+    if ($delete) { delete($scan_data->{$filename.'_'.$key}); }
+    return $scan_data->{$filename.'_'.$key};
+}
+
 sub scantron_parse_scanline {
-    my ($line,$scantron_config)=@_;
+    my ($line,$whichline,$scantron_config,$scan_data)=@_;
     my %record;
     my $questions=substr($line,$$scantron_config{'Qstart'}-1);
     my $data=substr($line,0,$$scantron_config{'Qstart'}-1);
@@ -3276,6 +3564,15 @@ sub scantron_parse_scanline {
     }
     $record{'scantron.ID'}=substr($data,$$scantron_config{'IDstart'}-1,
 				  $$scantron_config{'IDlength'});
+    $record{'scantron.PaperID'}=
+	substr($data,$$scantron_config{'PaperID'}-1,
+	       $$scantron_config{'PaperIDlength'});
+    $record{'scantron.FirstName'}=
+	substr($data,$$scantron_config{'FirstName'}-1,
+	       $$scantron_config{'FirstNamelength'});
+    $record{'scantron.LastName'}=
+	substr($data,$$scantron_config{'LastName'}-1,
+	       $$scantron_config{'LastNamelength'});
     my @alphabet=('A'..'Z');
     my $questnum=0;
     while ($questions) {
@@ -3283,31 +3580,48 @@ sub scantron_parse_scanline {
 	my $currentquest=substr($questions,0,$$scantron_config{'Qlength'});
 	substr($questions,0,$$scantron_config{'Qlength'})='';
 	if (length($currentquest) < $$scantron_config{'Qlength'}) { next; }
-	my (@array)=split(/$$scantron_config{'Qon'}/,$currentquest);
-	if (scalar(@array) gt 2) {
-	    #FIXME do something intelligent with double bubbles
-	    Apache->request->print("<br ><b>Wha!!!</b> <pre>".scalar(@array).
-				   '-'.$currentquest.'-'.$questnum.'</pre><br />');
-	}
+	my @array=split($$scantron_config{'Qon'},$currentquest,-1);
 	if (length($array[0]) eq $$scantron_config{'Qlength'}) {
 	    $record{"scantron.$questnum.answer"}='';
+	    if (!&scan_data($scan_data,"$whichline.no_bubble.$questnum")) {
+		push(@{$record{"scantron.missingerror"}},$questnum);
+ 	    }
 	} else {
 	    $record{"scantron.$questnum.answer"}=$alphabet[length($array[0])];
 	}
+ 	if (scalar(@array) gt 2) {
+ 	    push(@{$record{'scantron.doubleerror'}},$questnum);
+ 	    my @ans=@array;
+ 	    my $i=length($ans[0]);shift(@ans);
+	    while ($#ans) {
+ 		$i+=length($ans[0])+1;
+ 		$record{"scantron.$questnum.answer"}.=$alphabet[$i];
+ 		shift(@ans);
+ 	    }
+ 	}
     }
     $record{'scantron.maxquest'}=$questnum;
     return \%record;
 }
 
 sub scantron_add_delay {
+    my ($delayqueue,$scanline,$errormessage,$errorcode)=@_;
+    push(@$delayqueue,
+	 {'line' => $scanline, 'emsg' => $errormessage,
+	  'ecode' => $errorcode }
+	 );
 }
 
 sub scantron_find_student {
-    my ($scantron_record,$idmap)=@_;
+    my ($scantron_record,$scan_data,$idmap,$line)=@_;
     my $scanID=$$scantron_record{'scantron.ID'};
+    if ($scanID =~ /^\s*$/) {
+ 	return &scan_data($scan_data,"$line.user");
+    }
     foreach my $id (keys(%$idmap)) {
-	Apache->request->print('<pre>checking studnet -'.$id.'- againt -'.$scanID.'- </pre>');
-	if (lc($id) eq lc($scanID)) { Apache->request->print('success');return $$idmap{$id}; }
+ 	if (lc($id) eq lc($scanID)) {
+ 	    return $$idmap{$id};
+ 	}
     }
     return undef;
 }
@@ -3320,22 +3634,410 @@ sub scantron_filter {
     return 0;
 }
 
+sub scantron_process_corrections {
+    my ($r) = @_;
+    my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
+    my ($scanlines,$scan_data)=&scantron_getfile();
+    my $classlist=&Apache::loncoursedata::get_classlist();
+    my $which=$ENV{'form.scantron_line'};
+    my $line=&scantron_get_line($scanlines,$which);
+    my ($skip,$err,$errmsg);
+    if ($ENV{'form.scantron_skip_record'}) {
+	$skip=1;
+    } elsif ($ENV{'form.scantron_corrections'} =~ /^(duplicate|incorrect)ID$/) {
+	my $newstudent=$ENV{'form.scantron_username'}.':'.
+	    $ENV{'form.scantron_domain'};
+	my $newid=$classlist->{$newstudent}->[&Apache::loncoursedata::CL_ID];
+	($line,$err,$errmsg)=
+	    &scantron_fixup_scanline(\%scantron_config,$scan_data,$line,$which,
+				     'ID',{'newid'=>$newid,
+				    'username'=>$ENV{'form.scantron_username'},
+				    'domain'=>$ENV{'form.scantron_domain'}});
+    } elsif ($ENV{'form.scantron_corrections'} =~ /^(missing|double)bubble$/) {
+	foreach my $question (split(',',$ENV{'form.scantron_questions'})) {
+	    ($line,$err,$errmsg)=
+		&scantron_fixup_scanline(\%scantron_config,$scan_data,$line,
+					 $which,'answer',
+					 { 'question'=>$question,
+		       'response'=>$ENV{"form.scantron_correct_Q_$question"}});
+	    if ($err) { last; }
+	}
+    }
+    if ($err) {
+	$r->print("Unable to accept last correction, an error occurred :$errmsg:");
+    } else {
+	&scantron_put_line($scanlines,$which,$line,$skip);
+	&scantron_putfile($scanlines,$scan_data);
+    }
+}
+
+
+sub scantron_validate_file {
+    my ($r) = @_;
+    my ($symb,$url)=&get_symb_and_url($r);
+    if (!$symb) {return '';}
+    my $default_form_data=&defaultFormData($symb,$url);
+
+    if ($ENV{'form.scantron_corrections'}) {
+	&scantron_process_corrections($r);
+    }
+    #get the student pick code ready
+    $r->print(&Apache::loncommon::studentbrowser_javascript());
+    my $result= <<SCANTRONFORM;
+<form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantronupload">
+  <input type="hidden" name="selectpage" value="$ENV{'form.selectpage'}" />
+  <input type="hidden" name="scantron_format" value="$ENV{'form.scantron_format'}" />
+  <input type="hidden" name="scantron_selectfile" value="$ENV{'form.scantron_selectfile'}" />
+  <input type="hidden" name="scantron_maxbubble" value="$ENV{'form.scantron_maxbubble'}" />
+  $default_form_data
+SCANTRONFORM
+    $r->print($result);
+    
+    my @validate_phases=( 'ID',
+			  'CODE',
+			  'doublebubble',
+			  'missingbubbles');
+    if (!$ENV{'form.validatepass'}) {
+	$ENV{'form.valiadatepass'} = 0;
+    }
+    my $currentphase=$ENV{'form.valiadatepass'};
+
+    if ($ENV{'form.scantron_selectfile'}=~m-^/-) {
+	#first pass copy file to classdir
+	
+    }
+    my $stop=0;
+    while (!$stop && $currentphase < scalar(@validate_phases)) {
+	$r->print("<p> Validating ".$validate_phases[$currentphase]."</p>");
+	$r->rflush();
+	my $which="scantron_validate_".$validate_phases[$currentphase];
+	{
+	    no strict 'refs';
+	    ($stop,$currentphase)=&$which($r,$currentphase);
+	}
+    }
+    if (!$stop) {
+	$r->print("Validation process complete.<br />");
+	$r->print('<input type="submit" name="submit" value="Start Grading" />');
+	$r->print('<input type="hidden" name="command" value="scantron_process" />');
+    } else {
+	$r->print('<input type="hidden" name="command" value="scantron_validate" />');
+	$r->print("<input type='hidden' name='validatepass' value='".$currentphase."' />");
+    }
+    if ($stop) {
+	$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.");
+    }
+    $r->print(" </form><br />".&show_grading_menu_form($symb,$url).
+	      "</body></html>");
+    return '';
+}
+
+sub scantron_getfile {
+    #FIXME really would prefer a scantron directory but tokenwrapper
+    # doesn't allow access to subdirs of userfiles
+    my $cname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
+    my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
+    my $lines;
+    $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
+		       'scantron_orig_'.$ENV{'form.scantron_selectfile'});
+    my %scanlines;
+    $scanlines{'orig'}=[(split("\n",$lines,-1))];
+    my $temp=$scanlines{'orig'};
+    $scanlines{'count'}=$#$temp;
+
+    $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
+		       'scantron_corrected_'.$ENV{'form.scantron_selectfile'});
+    if ($lines eq '-1') {
+	$scanlines{'corrected'}=[];
+    } else {
+	$scanlines{'corrected'}=[(split("\n",$lines,-1))];
+    }
+    $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
+		       'scantron_skipped_'.$ENV{'form.scantron_selectfile'});
+    if ($lines eq '-1') {
+	$scanlines{'skipped'}=[];
+    } else {
+	$scanlines{'skipped'}=[(split("\n",$lines,-1))];
+    }
+    my @tmp=&Apache::lonnet::dump('scantrondata',$cdom,$cname);
+    if ($tmp[0] =~ /^(error:|no_such_host)/) { @tmp=(); }
+    my %scan_data = @tmp;
+    return (\%scanlines,\%scan_data);
+}
+
+sub lonnet_putfile {
+    my ($contents,$filename)=@_;
+    my $docuname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
+    my $docudom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
+    my $docuhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
+    $ENV{'form.sillywaytopassafilearound'}=$contents;
+    &Apache::lonnet::finishuserfileupload($docuname,$docudom,$docuhome,'sillywaytopassafilearound',$filename);
+
+}
+
+sub scantron_putfile {
+    my ($scanlines,$scan_data) = @_;
+    #FIXME really would prefer a scantron directory but tokenwrapper
+    # doesn't allow access to subdirs of userfiles
+    my $cname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
+    my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
+    my $prefix='scantron_';
+# no need to update orig, shouldn't change
+#   &lonnet_putfile(join("\n",@{$scanlines->{'orig'}}),$prefix.'orig_'.
+#		    $ENV{'form.scantron_selectfile'});
+    &lonnet_putfile(join("\n",@{$scanlines->{'corrected'}}),
+		    $prefix.'corrected_'.
+		    $ENV{'form.scantron_selectfile'});
+    &lonnet_putfile(join("\n",@{$scanlines->{'skipped'}}),
+		    $prefix.'skipped_'.
+		    $ENV{'form.scantron_selectfile'});
+    &Apache::lonnet::put('scantrondata',$scan_data,$cdom,$cname);
+}
+
+sub scantron_get_line {
+    my ($scanlines,$i)=@_;
+    if ($scanlines->{'skipped'}[$i]) {return undef;}
+    if ($scanlines->{'corrected'}[$i]) {return $scanlines->{'corrected'}[$i];}
+    return $scanlines->{'orig'}[$i]; 
+}
+
+sub scantron_put_line {
+    my ($scanlines,$i,$newline,$skip)=@_;
+    if ($skip) {
+	$scanlines->{'skipped'}[$i]=$newline;
+	return;
+    }
+    $scanlines->{'corrected'}[$i]=$newline;
+}
+
+sub scantron_validate_ID {
+    my ($r,$currentphase) = @_;
+    
+    #get student info
+    my $classlist=&Apache::loncoursedata::get_classlist();
+    my %idmap=&username_to_idmap($classlist);
+
+    #get scantron line setup
+    my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
+    my ($scanlines,$scan_data)=&scantron_getfile();
+
+    my %found=('ids'=>{},'usernames'=>{});
+    for (my $i=0;$i<=$scanlines->{'count'};$i++) {
+	my $line=&scantron_get_line($scanlines,$i);
+	if ($line=~/^[\s\cz]*$/) { next; }
+	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
+						 $scan_data);
+	my $id=$$scan_record{'scantron.ID'};
+	my $found;
+	foreach my $checkid (keys(%idmap)) {
+	    if (lc($checkid) eq lc($id)) { $found=$checkid;last; }
+	}
+	if ($found) {
+	    my $username=$idmap{$found};
+	    if ($found{'ids'}{$found}) {
+		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
+					 $line,'duplicateID',$found);
+		return(1);
+	    } elsif ($found{'usernames'}{$username}) {
+		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
+					 $line,'duplicateID',$username);
+		return(1);
+	    }
+	    #FIXME store away line we prviously saw the ID on to use above
+	    $found{'ids'}{$found}++;
+	    $found{'usernames'}{$username}++;
+	} else {
+	    if ($id =~ /^\s*$/) {
+		my $username=&scan_data($scan_data,"$i.user");
+		if (defined($username) && $found{'usernames'}{$username}) {
+		    &scantron_get_correction($r,$i,$scan_record,
+					     \%scantron_config,
+					     $line,'duplicateID',$username);
+		    return(1);
+		} elsif (!defined($username)) {
+		    &scantron_get_correction($r,$i,$scan_record,
+					     \%scantron_config,
+					     $line,'incorrectID');
+		    return(1);
+		}
+		$found{'usernames'}{$username}++;
+	    } else {
+		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
+					 $line,'incorrectID');
+		return(1);
+	    }
+	}
+    }
+
+    return (0,$currentphase+1);
+}
+
+sub scantron_get_correction {
+    my ($r,$i,$scan_record,$scan_config,$line,$error,$arg)=@_;
+
+#FIXME in the case of a duplicated ID the previous line, probaly need
+#to show both the current line and the previous one and allow skipping
+#the previous one or the current one
+
+    $r->print("<p><b>An error was detected ($error)</b>");
+    if ( defined($$scan_record{'scantron.PaperID'}) ) {
+	$r->print(" for PaperID <tt>".
+		  $$scan_record{'scantron.PaperID'}."</tt> \n");
+    } else {
+	$r->print(" in scanline $i <pre>".
+		  $line."</pre> \n");
+    }
+    $r->print('<input type="hidden" name="scantron_corrections" value="'.$error.'" />'."\n");
+    $r->print('<input type="hidden" name="scantron_line" value="'.$i.'" />'."\n");
+    if ($error =~ /ID$/) {
+	if ($error eq 'unknownID') {
+	    $r->print("The encoded ID is not in the classlist</p>\n");
+	} elsif ($error eq 'duplicateID') {
+	    $r->print("The encoded ID has also been used by a previous paper $arg</p>\n");
+	}
+	$r->print("<p>The ID on the form is  <tt>".
+		  $$scan_record{'scantron.ID'}."</tt><br />\n");
+	$r->print("The name on the paper is ".
+		  $$scan_record{'scantron.LastName'}.",".
+		  $$scan_record{'scantron.FirstName'}."</p>");
+	$r->print("<p>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
+	$r->print(&Apache::loncommon::selectstudent_link('scantronupload',
+				       'scantron_username','scantron_domain'));
+	$r->print(": <input type='text' name='scantron_username' value='' />");
+	$r->print("\n@".
+		 &Apache::loncommon::select_dom_form(undef,'scantron_domain'));
+
+	$r->print('</li>');
+    } elsif ($error eq 'doublebubble') {
+#FIXME Need to print out who this is along with the paper info
+	$r->print("<p>There have been multiple bubbles scanned for a some question(s)</p>\n");
+	$r->print('<input type="hidden" name="scantron_questions" value="'.
+		  join(',',@{$arg}).'" />');
+	$r->print("<p>Please indicate which bubble should be used for grading</p>");
+	foreach my $question (@{$arg}) {
+	    my $selected=$$scan_record{"scantron.$question.answer"};
+	    &scantron_bubble_selector($r,$scan_config,$question,split('',$selected));
+	}
+    } elsif ($error eq 'missingbubble') {
+	$r->print("<p>There have been <b>no</b> bubbles scanned for some question(s)</p>\n");
+	$r->print("<p>Please indicate which bubble should be used for grading</p>");
+	$r->print("Some questions have no scanned bubbles\n");
+	$r->print('<input type="hidden" name="scantron_questions" value="'.
+		  join(',',@{$arg}).'" />');
+	foreach my $question (@{$arg}) {
+	    my $selected=$$scan_record{"scantron.$question.answer"};
+	    &scantron_bubble_selector($r,$scan_config,$question);
+	}
+    } else {
+	$r->print("\n<ul>");
+    }
+    $r->print("\n</li></ul>");
+
+}
+
+sub scantron_bubble_selector {
+    my ($r,$scan_config,$quest,@selected)=@_;
+    my $max=$$scan_config{'Qlength'};
+    my @alphabet=('A'..'Z');
+    $r->print("<table border='1'><tr><td rowspan='2'>$quest</td>");
+    for (my $i=0;$i<$max+1;$i++) {
+	$r->print('<td align="center">');
+	if ($selected[0] eq $alphabet[$i]) { $r->print('X'); shift(@selected) }
+	else { $r->print('&nbsp;'); }
+	$r->print('</td>');
+    }
+    $r->print('<td></td></tr><tr>');
+    for (my $i=0;$i<$max;$i++) {
+	$r->print('<td><input type="radio" name="scantron_correct_Q_'.$quest.
+		  '" value="'.$i.'" />'.$alphabet[$i]."</td>");
+    }
+    $r->print('<td><input type="radio" name="scantron_correct_Q_'.$quest.
+	      '" value="none" /> No bubble </td>');
+    $r->print('</tr></table>');
+}
+
+sub scantron_validate_CODE {
+    my ($r,$currentphase) = @_;
+    #FIXME doesn't do anything yet
+    return (0,$currentphase+1);
+}
+
+sub scantron_validate_doublebubble {
+    my ($r,$currentphase) = @_;
+    #get student info
+    my $classlist=&Apache::loncoursedata::get_classlist();
+    my %idmap=&username_to_idmap($classlist);
+
+    #get scantron line setup
+    my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
+    my ($scanlines,$scan_data)=&scantron_getfile();
+    for (my $i=0;$i<=$scanlines->{'count'};$i++) {
+	my $line=&scantron_get_line($scanlines,$i);
+	if ($line=~/^[\s\cz]*$/) { next; }
+	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
+						 $scan_data);
+	if (!defined($$scan_record{'scantron.doubleerror'})) { next; }
+	&scantron_get_correction($r,$i,$scan_record,\%scantron_config,$line,
+				 'doublebubble',
+				 $$scan_record{'scantron.doubleerror'});
+    	return (1,$currentphase);
+    }
+    return (0,$currentphase+1);
+}
+
+sub scantron_validate_missingbubbles {
+    my ($r,$currentphase) = @_;
+    #get student info
+    my $classlist=&Apache::loncoursedata::get_classlist();
+    my %idmap=&username_to_idmap($classlist);
+
+    #get scantron line setup
+    my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
+    my ($scanlines,$scan_data)=&scantron_getfile();
+    my $max_bubble=$ENV{'form.scantron_maxbubble'};
+    if (!$max_bubble) { $max_bubble=2**31; }
+    for (my $i=0;$i<=$scanlines->{'count'};$i++) {
+	my $line=&scantron_get_line($scanlines,$i);
+	if ($line=~/^[\s\cz]*$/) { next; }
+	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
+						 $scan_data);
+	if (!defined($$scan_record{'scantron.missingerror'})) { next; }
+	my @to_correct;
+	foreach my $missing (@{$$scan_record{'scantron.missingerror'}}) {
+	    if ($missing > $max_bubble) { next; }
+	    push(@to_correct,$missing);
+	}
+	if (@to_correct) {
+	    &scantron_get_correction($r,$i,$scan_record,\%scantron_config,
+				     $line,'missingbubble',\@to_correct);
+	    return (1,$currentphase);
+	}
+
+    }
+    return (0,$currentphase+1);
+}
+
 sub scantron_process_students {
     my ($r) = @_;
-    my (undef,undef,$sequence)=split(/___/,$ENV{'form.selectpage'});
+    my (undef,undef,$sequence)=&Apache::lonnet::decode_symb($ENV{'form.selectpage'});
     my ($symb,$url)=&get_symb_and_url($r);
     if (!$symb) {return '';}
     my $default_form_data=&defaultFormData($symb,$url);
 
     my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
-    my $scanlines=Apache::File->new($Apache::lonnet::perlvar{'lonScansDir'}."/$ENV{'form.scantron_selectfile'}");
-    my @scanlines=<$scanlines>;
+    my ($scanlines,$scan_data)=&scantron_getfile();
     my $classlist=&Apache::loncoursedata::get_classlist();
     my %idmap=&username_to_idmap($classlist);
-    my $navmap=Apache::lonnavmaps::navmap->new($ENV{'request.course.fn'}.'.db',$ENV{'request.course.fn'}.'_parms.db',1, 1);
+    my $navmap=Apache::lonnavmaps::navmap->new();
     my $map=$navmap->getResourceByUrl($sequence);
     my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
-    $r->print("geto ".scalar(@resources)."<br />");
+#    $r->print("geto ".scalar(@resources)."<br />");
     my $result= <<SCANTRONFORM;
 <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantronupload">
   <input type="hidden" name="command" value="scantron_configphase" />
@@ -3344,31 +4046,38 @@ SCANTRONFORM
     $r->print($result);
 
     my @delayqueue;
-    my $totalcorrect;
-    my $totalincorrect;
-
-    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,
-	           'Scantron Status','Scantron Progress',scalar(@scanlines));
-    foreach my $line (@scanlines) {
-	my $studentcorrect;
-	my $studentincorrect;
-
-	chomp($line);
-	my $scan_record=&scantron_parse_scanline($line,\%scantron_config);
-	my ($uname,$udom);
-	if ($uname=&scantron_find_student($scan_record,\%idmap)) {
-	    &scantron_add_delay(\@delayqueue,$line,
-				'Unable to find a student that matches');
-	}
-	$r->print('<pre>doing studnet'.$uname.'</pre>');
-	($uname,$udom)=split(/:/,$uname);
-	&Apache::lonnet::delenv('form.counter');
-	&Apache::lonnet::appenv(%$scan_record);
-#    &Apache::lonhomework::showhash(%ENV);
-    $Apache::lonxml::debug=1;
-	&Apache::lonxml::debug("line is $line");
+    my %completedstudents;
+    
+    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Scantron Status',
+ 				    'Scantron Progress',$scanlines->{'count'});
+    &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,
+					  'Processing first student');
+    my $start=&Time::HiRes::time();
+    my $i=-1;
+    my ($uname,$udom);
+    while ($i<$scanlines->{'count'}) {
+ 	($uname,$udom)=('','');
+ 	$i++;
+ 	my $line=&scantron_get_line($scanlines,$i);
+ 	if ($line=~/^[\s\cz]*$/) { next; }
+ 	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
+ 						 $scan_data);
+ 	unless ($uname=&scantron_find_student($scan_record,$scan_data,
+ 					      \%idmap,$i)) {
+  	    &scantron_add_delay(\@delayqueue,$line,
+ 				'Unable to find a student that matches',1);
+ 	    next;
+  	}
+ 	if (exists $completedstudents{$uname}) {
+ 	    &scantron_add_delay(\@delayqueue,$line,
+ 				'Student '.$uname.' has multiple sheets',2);
+ 	    next;
+ 	}
+  	($uname,$udom)=split(/:/,$uname);
+  	&Apache::lonnet::delenv('form.counter');
+  	&Apache::lonnet::appenv(%$scan_record);
 	
-	    my $i=0;
+	my $i=0;
 	foreach my $resource (@resources) {
 	    $i++;
 	    my $result=&Apache::lonnet::ssi($resource->src(),
@@ -3378,54 +4087,83 @@ SCANTRONFORM
 				  'grade_domain'  =>$udom,
 				  'grade_courseid'=>$ENV{'request.course.id'},
 				  'grade_symb'    =>$resource->symb()));
-	    my %score=&Apache::lonnet::restore($resource->symb(),
-					       $ENV{'request.course.id'},
-					       $udom,$uname);
-	    foreach my $part ($resource->{PARTS}) {
-		if ($score{'resource.'.$part.'.solved'} =~ /^correct/) {
-		    $studentcorrect++;
-		    $totalcorrect++;
-		} else {
-		    $studentincorrect++;
-		    $totalincorrect++;
-		}
-	    }
-	    $r->print('<pre>'.
-		      $resource->symb().'-'.
-		      $resource->src().'-'.'</pre>result is'.$result);
-	    &Apache::lonhomework::showhash(%score);
-	#    if ($i eq 3) {last;}
 	}
+	$completedstudents{$uname}={'line'=>$line};
+    } continue {
 	&Apache::lonnet::delenv('form.counter');
 	&Apache::lonnet::delenv('scantron\.');
 	&Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
-             'last student Who got a '.$studentcorrect.' correct and '.
-	     $studentincorrect.' incorrect. The class has gotten '.
-             $totalcorrect.' correct and '.$totalincorrect.' incorrect');
-	last;
-	#FIXME
-	#get iterator for $sequence
-	#foreach question 'submit' the students answer to the server
-	#   through grade target {
-	#   generate data to pass back that includes grade recevied
-	#}
-    }
-    $Apache::lonxml::debug=0;
-    foreach my $delay (@delayqueue) {
-	#FIXME
-	#print out each delayed student with interface to select how
-	#  to repair student provided info
-	#Expected errors include
-	#  1 bad/no stuid/username
-	#  2 invalid bubblings
-	
+						 'last student');
     }
-    #FIXME
-    # if delay queue exists 2 submits one to process delayed students one
-    #     to ignore delayed students, possibly saving the delay queue for later
-    
+    &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
+    my $lasttime = &Time::HiRes::time()-$start;
+    $r->print("<p>took $lasttime</p>");
+
     $navmap->untieHashes();
+    $r->print("<p>Done</p>");
+    $r->print(&show_grading_menu_form($symb,$url));
+    return '';
+}
+
+sub scantron_upload_scantron_data {
+    my ($r)=@_;
+    $r->print(&Apache::loncommon::coursebrowser_javascript($ENV{'request.role.domain'}));
+    my $select_link=&Apache::loncommon::selectcourse_link('rules','courseid',
+							  'domainid');
+    my $domsel=&Apache::loncommon::select_dom_form($ENV{'request.role.domain'},
+						   'domainid');
+    $r->print(<<UPLOAD);
+<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.");
+	    return false;
+	}
+	formname.submit();
+    }
+</script>
+
+<form enctype='multipart/form-data' action='/adm/grades' name='rules' method='post'>
+Course: <input name='courseid' type='text' />
+Domain: $domsel $select_link
+<br />
+<input name='command' value='scantronupload_save' type='hidden' />
+File to upload:<input type="file" name="upfile" size="50" />
+<br />
+<input type="button" onClick="javascript:checkUpload(this.form);" value="Upload Scantron Data" />
+</form>
+UPLOAD
+    return '';
+}
+
+sub scantron_upload_scantron_data_save {
+    my($r)=@_;
+    $r->print("Doing upload to ".$ENV{'form.courseid'});
+    my $home=&Apache::lonnet::homeserver($ENV{'form.courseid'},
+					 $ENV{'form.domainid'});
+    my $fname=$ENV{'form.upfile.filename'};
+    #FIXME
+    #copied from lonnet::userfileupload()
+    #make that function able to target a specified course
+    # Replace Windows backslashes by forward slashes
+    $fname=~s/\\/\//g;
+    # Get rid of everything but the actual filename
+    $fname=~s/^.*\/([^\/]+)$/$1/;
+    # Replace spaces by underscores
+    $fname=~s/\s+/\_/g;
+    # Replace all other weird characters by nothing
+    $fname=~s/[^\w\.\-]//g;
+    # See if there is anything left
+    unless ($fname) { return 'error: no uploaded file'; }
+    $fname='scantron_orig_'.$fname;
+    &Apache::lonnet::logthis("fname is $fname");
+    $r->print(&Apache::lonnet::finishuserfileupload($ENV{'form.courseid'},
+						    $ENV{'form.domainid'},
+						    $home,'upfile',$fname));
+    return '';
 }
+
+
 #-------- end of section for handling grading scantron forms -------
 #
 #-------------------------------------------------------------------
@@ -3477,7 +4215,7 @@ sub gradingmenu {
 	}
 	formname.command.value = cmd;
 	formname.saveState.value = "saveCmd="+cmdsave+":saveSec="+pullDownSelection(formname.section)+
-	    ":saveSub="+radioSelection(formname.submitonly)+":saveStatus="+pullDownSelection(formname.Status);
+	    ":saveSub="+pullDownSelection(formname.submitonly)+":saveStatus="+pullDownSelection(formname.Status);
 	if (val < 5) formname.submit();
 	if (val == 5) {
 	    if (!checkReceiptNo(formname,'notOK')) { return false;}
@@ -3530,27 +4268,32 @@ GRADINGMENUJS
     $result.='<tr bgcolor="#ffffe6" valign="top"><td>'."\n".
 	'&nbsp;Select Section: <select name="section">'."\n";
     if (ref($sections)) {
-	foreach (sort (@$sections)) {$result.='<option value="'.$_.'" '.
-					 ($saveSec eq $_ ? 'selected="on"' : '').'>'.$_.'</option>'."\n";}
+	foreach (sort (@$sections)) {
+	    $result.='<option value="'.$_.'" '.
+		($saveSec eq $_ ? 'selected="on"':'').'>'.$_.'</option>'."\n";
+	}
     }
     $result.= '<option value="all" '.($saveSec eq 'all' ? 'selected="on"' : ''). '>all</select> &nbsp; ';
 
     $result.='Student Status:</b>'.&Apache::lonhtmlcommon::StatusOptions($saveStatus,undef,1,undef);
 
-    if (ref($sections)) {
-	$result.='&nbsp;(Section "no" implies the students were not assigned a section.)<br />' 
-	    if (grep /no/,@$sections);
+    if (ref($sections) && (grep /no/,@$sections)) {
+	$result.='&nbsp;(Section "no" implies the students were not assigned a section.)<br />';
     }
     $result.='</td></tr>';
 
     $result.='<tr bgcolor="#ffffe6"valign="top"><td>'.
 	'<input type="radio" name="radioChoice" value="submission" '.
-	($saveCmd eq 'submission' ? 'checked' : '').'> '.'<b>Current Resource:</b> For one or more students'.
-	'<br />&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;-->For students with '.
-	'<input type="radio" name="submitonly" value="yes" '.
-	($saveSub eq 'yes' ? 'checked' : '').' /> submissions or '.
-	'<input type="radio" name="submitonly" value="all" '.
-	($saveSub eq 'all' ? 'checked' : '').' /> for all</td></tr>'."\n";
+	($saveCmd eq 'submission' ? 'checked' : '').'> '.'<b>Current Resource:</b> For one or more students '.
+	'<select name="submitonly">'.
+	'<option value="yes" '.
+	($saveSub eq 'yes' ? 'selected="on"' : '').'>with submissions</option>'.
+	'<option value="graded" '.
+	($saveSub eq 'graded' ? 'selected="on"' : '').'>with ungraded submissions</option>'.
+	'<option value="incorrect" '.
+	($saveSub eq 'incorrect' ? 'selected="on"' : '').'>with incorrect submissions</option>'.
+	'<option value="all" '.
+	($saveSub eq 'all' ? 'selected="on"' : '').'>with any status</option></select></td></tr>'."\n";
 
     $result.='<tr bgcolor="#ffffe6"valign="top"><td>'.
 	'<input type="radio" name="radioChoice" value="viewgrades" '.
@@ -3563,7 +4306,7 @@ GRADINGMENUJS
 	'The <b>complete</b> set/page/sequence: For one student</td></tr>'."\n";
 
     $result.='<tr bgcolor="#ffffe6"><td><br />'.
-	'<input type="button" onClick="javascript:checkChoice(this.form,\'2\');" value="View/Grade/Regrade" />'.
+	'<input type="button" onClick="javascript:checkChoice(this.form,\'2\');" value="Next->" />'.
 	'</td></tr></table>'."\n";
 
     $result.='</td><td valign="top">';
@@ -3596,23 +4339,27 @@ sub handler {
 
     undef(%perm);
     if ($ENV{'browser.mathml'}) {
-	$request->content_type('text/xml');
+	&Apache::loncommon::content_type($request,'text/xml');
     } else {
-	$request->content_type('text/html');
+	&Apache::loncommon::content_type($request,'text/html');
     }
     $request->send_http_header;
     return '' if $request->header_only;
     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
     my $url=$ENV{'form.url'};
     my $symb=$ENV{'form.symb'};
-    my $command=$ENV{'form.command'};
+    my @commands=&Apache::loncommon::get_env_multiple('form.command');
+    my $command=$commands[0];
+    if ($#commands > 0) {
+	&Apache::lonnet::logthis("grades got multiple commands ".join(':',@commands));
+    }
     if (!$url) {
 	my ($temp1,$temp2);
-	($temp1,$temp2,$ENV{'form.url'})=split(/___/,$symb);
+	($temp1,$temp2,$ENV{'form.url'})=&Apache::lonnet::decode_symb($symb);
 	$url = $ENV{'form.url'};
     }
     &send_header($request);
-    if ($url eq '' && $symb eq '') {
+    if ($url eq '' && $symb eq '' && $command eq '') {
 	if ($ENV{'user.adv'}) {
 	    if (($ENV{'form.codeone'}) && ($ENV{'form.codetwo'}) &&
 		($ENV{'form.codethree'})) {
@@ -3621,7 +4368,7 @@ sub handler {
 		my ($tsymb,$tuname,$tudom,$tcrsid)=
 		    &Apache::lonnet::checkin($token);
 		if ($tsymb) {
-		    my ($map,$id,$url)=split(/\_\_\_/,$tsymb);
+		    my ($map,$id,$url)=&Apache::lonnet::decode_symb($tsymb);
 		    if (&Apache::lonnet::allowed('mgr',$tcrsid)) {
 			$request->print(&Apache::lonnet::ssi_body('/res/'.$url,
 					  ('grade_username' => $tuname,
@@ -3653,7 +4400,6 @@ sub handler {
 		delete($perm{'mgr'});
 	    }
 	}
-
 	if ($command eq 'submission' && $perm{'vgr'}) {
 	    ($ENV{'form.student'} eq '' ? &listStudents($request) : &submission($request,0,0));
 	} elsif ($command eq 'pickStudentPage' && $perm{'vgr'}) {
@@ -3693,10 +4439,21 @@ sub handler {
 	    }
 	} elsif ($command eq 'scantron_selectphase' && $perm{'mgr'}) {
 	    $request->print(&scantron_selectphase($request));
+ 	} elsif ($command eq 'scantron_validate' && $perm{'mgr'}) {
+ 	    $request->print(&scantron_validate_file($request));
+	} elsif ($command eq 'scantron_validate' && $perm{'mgr'}) {
+	    $request->print(&scantron_validate_file($request));
 	} elsif ($command eq 'scantron_process' && $perm{'mgr'}) {
 	    $request->print(&scantron_process_students($request));
+ 	} elsif ($command eq 'scantronupload' && 
+ 		 &Apache::lonnet::allowed('usc',$ENV{'request.role.domain'})) {
+ 	    $request->print(&scantron_upload_scantron_data($request));
+ 
+ 	} elsif ($command eq 'scantronupload_save' &&
+ 		 &Apache::lonnet::allowed('usc',$ENV{'request.role.domain'})) {
+ 	    $request->print(&scantron_upload_scantron_data_save($request));
 	} elsif ($command) {
-	    $request->print("Access Denied");
+	    $request->print("Access Denied ($command)");
 	}
     }
     &send_footer($request);
@@ -3712,6 +4469,7 @@ sub send_header {
 #remotewindow.close();
 #</script>"); 
     $request->print(&Apache::loncommon::bodytag('Grading'));
+    $request->rflush();
 }
 
 sub send_footer {