--- loncom/homework/grades.pm	2003/10/13 22:36:59	1.130.2.1.2.8
+++ loncom/homework/grades.pm	2003/11/07 08:56:52	1.148
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Grading handler
 #
-# $Id: grades.pm,v 1.130.2.1.2.8 2003/10/13 22:36:59 albertel Exp $
+# $Id: grades.pm,v 1.148 2003/11/07 08:56:52 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
@@ -115,20 +133,25 @@ sub response_type {
     $symb=($ENV{'form.symb'} ne '' ? $ENV{'form.symb'} : (&Apache::lonnet::symbread($url))) if ($symb eq '');
     my $allkeys = &Apache::lonnet::metadata($url,'keys');
     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;
+	    }
 	    $responsetype =~ s/response$//; # 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'); 
+	    $handgrade{$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
@@ -137,42 +160,105 @@ sub showResourceInfo {
     my ($url,$probTitle) = @_;
     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($url);
+    my ($partlist,$handgrade,$responseType) = &response_type($url);
     my %resptype = ();
     my $hdgrade='no';
-    for (sort keys(%$handgrade)) {
-	my ($responsetype,$handgrade)=split(/:/,$$handgrade{$_});
-	my $partID = (split(/_/))[0];
-	$resptype{$partID} = $responsetype;
+    for my $part_resID (sort keys(%$handgrade)) {
+	my $handgrade=$$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>'.
+	$result.='<tr><td><b>Part </b>'.$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));
+    (my $debug,$subresult)=split(/_HASH_REF__/,$subresult,2);
+    Apache->request->print($debug);
+    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,$ans;
+    my ($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>';
 	}
-	my $grayFont = '<font color="#999999">';
 	return '<blockquote><table border="1">'.
-	    '<tr valign="top"><td>Answer</td><td>'.
-	    (join '</td><td>',@ans).'</td></tr>'.
-	    '<tr valign="top"><td>'.$grayFont.'Option ID</font></td><td>'.$grayFont.
-	    (join '</td><td>'.$grayFont,@IDs).'</font></td></tr>'.
-	    '</table></blockquote>';
-    }
-    if ($response eq 'essay') {
+	    '<tr valign="top"><td>Answer</td>'.$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'},
@@ -185,7 +271,7 @@ 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 '<br /><br /><blockquote>'.&keywords_highlight($answer).'</blockquote>';
+	return '<br /><br /><blockquote><pre>'.&keywords_highlight($answer).'</pre></blockquote>';
     }
     return $answer;
 }
@@ -218,7 +304,8 @@ sub commonJSfunctions {
 		}
 	    }
 	} else {
-	    if (selectOne.selected) return selectOne.value;
+            // only one value it must be the selected one
+	    return selectOne.value;
 	}
     }
 </script>
@@ -506,9 +593,12 @@ LISTJAVASCRIPT
     my $checkhdgrade = ($ENV{'form.handgrade'} eq 'yes' && scalar(@$partlist) > 1 ) ? 'checked' : '';
     my $checklastsub = $checkhdgrade eq '' ? 'checked' : '';
     my $gradeTable='<form action="/adm/grades" method="post" name="gradesub">'."\n".
-	'&nbsp;<b>View Problem Text: </b><input type="radio" name="vProb" value="no" checked /> no '."\n".
+	'&nbsp;<b>View Problem Text: </b><input type="radio" name="vProb" value="no" checked="on" /> no '."\n".
 	'<input type="radio" name="vProb" value="yes" /> one student '."\n".
 	'<input type="radio" name="vProb" value="all" /> all students <br />'."\n".
+	'&nbsp;<b>View Answer: </b><input type="radio" name="vAns" value="no"  /> no '."\n".
+	'<input type="radio" name="vAns" value="yes" /> one student '."\n".
+	'<input type="radio" name="vAns" value="all" checked="on" /> all students <br />'."\n".
 	'&nbsp;<b>Submissions: </b>'."\n";
     if ($ENV{'form.handgrade'} eq 'yes' && scalar(@$partlist) > 1) {
 	$gradeTable.='<input type="radio" name="lastSub" value="hdgrade" '.$checkhdgrade.' /> essay part only'."\n";
@@ -517,8 +607,8 @@ 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".
@@ -544,7 +634,7 @@ LISTJAVASCRIPT
     $gradeTable.='<input type="button" '."\n".
 	'onClick="javascript:checkSelect(this.form.stuinfo);" '."\n".
 	'value="Next->" />'."\n";
-
+    $gradeTable.='<input type="checkbox" name="checkPlag" checked="on">Check For Plagiarism</input>';
     my (undef, undef, $fullname) = &getclasslist($getsec,'1');  
     $gradeTable.='<table border="0"><tr><td bgcolor="#777777">'.
 	'<table border="0"><tr bgcolor="#e6ffff">';
@@ -568,18 +658,21 @@ LISTJAVASCRIPT
 	my %status = ();
 	if ($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;
 		    $gradeTable.='<input type="hidden" name="'.
 			$student.':submitted_by" value="'.
 			$status{'resource.'.$partid.'.submitted_by'}.'" />';
 		}
 	    }
-	    next if ($statusflg eq '' && $submitonly eq 'yes');
+	    next if (!$submitted && ($submitonly eq 'yes' || $submitonly eq 'graded'));
+	    next if (!$graded && $submitonly eq 'graded');
 	}
 
 	$ctr++;
@@ -621,7 +714,7 @@ 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/;
@@ -1195,27 +1288,46 @@ 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;
@@ -1264,8 +1376,16 @@ 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 
@@ -1300,6 +1420,7 @@ 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".
@@ -1350,13 +1471,22 @@ 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 />'));
@@ -1439,7 +1569,7 @@ KEYWORDS
 		$$fullname{$ENV{'form.'.$uname.':'.$udom.':submitted_by'}}.'</a>';
 	    $request->print($submitby);
 	} else {
-	    my ($string,$timestamp)= &get_last_submission (\%record);
+	    my ($string,$timestamp)= &get_last_submission(\%record);
 	    my $lastsubonly=''.
 		($$timestamp eq '' ? '' : '<b>Date Submitted:</b> '.
 		 $$timestamp)."</td></tr>\n";
@@ -1447,8 +1577,8 @@ KEYWORDS
 		$lastsubonly.='<tr><td bgcolor="#ffffe6">'.$$string[0]; 
 	    } else {
 		for my $part (sort keys(%$handgrade)) {
-		    my ($responsetype,$foo) = split(/:/,$$handgrade{$part});
 		    my ($partid,$respid) = split(/_/,$part);
+		    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.
@@ -1456,19 +1586,27 @@ KEYWORDS
 			    '<font color="red">Nothing submitted - no attempts</font><br /><br />';
  		    } else {
 			foreach (@$string) {
-			    my ($partid,$respid) = /^resource\.(\w+)\.(\w+)\.submission/;
+			    my ($partid,$respid) = /^resource\.([^\.]*)\.([^\.]*)\.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 />';
+				my $oname;
+				my $odom;
+				my $ocrsid;
+				my $oessay;
+				my $osim;
+				if($ENV{'form.checkPlag'}){
+				    ($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);
 				$lastsubonly.='<tr><td bgcolor="#ffffe6"><b>Part '.
 				    $partid.'</b> <font color="#999999">( ID '.$respid.
 				    ' )</font>&nbsp; &nbsp;'.
@@ -1479,8 +1617,8 @@ KEYWORDS
 				     '<font color="red" size="1">Like all files provided by users, '.
 				     'this file may contain virusses</font><br />':'').
 				     '<b>Submitted Answer: </b>'.
-				     &cleanRecord($subval,$responsetype,$symb).
-				      '<br /><br />'.$similar."\n"
+				     &cleanRecord($subval,$responsetype,$symb,$partid,$respid,\%record,$order).
+				     '<br /><br />'.$similar."\n"
 				     if ($ENV{'form.lastSub'} eq 'lastonly' || 
 					 ($ENV{'form.lastSub'} eq 'hdgrade' && 
 					  $$handgrade{$part} =~ /:yes$/));
@@ -1494,7 +1632,7 @@ KEYWORDS
 	}
     } 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'},
@@ -1782,15 +1920,25 @@ sub processHandGrade {
     }
     $ctr = 0;
     @parsedlist = reverse @parsedlist if ($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 %record = &Apache::lonnet::restore($symb,$ENV{'request.course.id'},$udom,$uname);
-	    my $statusflg = '';
-	    foreach (split(/:/,$ENV{'form.gradePartRespid'})){
-		$statusflg = 1 if (exists ($record{'resource.'.$_.'.submission'}));
+	if ($submitonly =~ /^(yes|graded)$/) {
+#	    my %record = &Apache::lonnet::restore($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)) {
+		$submitted = 1 if ($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' || $submitonly eq 'graded'));
+	    next if (!$graded && $submitonly eq 'graded');
 	}
 	push @nextlist,$student if ($ctr < $ntstu);
 	last if ($ctr == $ntstu);
@@ -2090,7 +2238,7 @@ sub viewgrades {
 	my ($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;
 
@@ -2132,7 +2280,7 @@ sub viewgrades {
     $result.= '<table border=0><tr><td bgcolor="#777777">'."\n".
 	'<table border=0><tr bgcolor="#deffff"><td>&nbsp;<b>No.</b>&nbsp;</td>'.
 	'<td>'.&nameUserString('header')."</td>\n";
-    my (@parts) = sort(&getpartlist($url));
+    my (@parts) = sort(&getpartlist($url,$symb));
     foreach my $part (@parts) {
 	my $display=&Apache::lonnet::metadata($url,$part.'.display');
 	$display =~ s|^Number of Attempts|Tries<br />|; # makes the column narrower
@@ -2249,7 +2397,7 @@ sub editgrades {
     my %columns = ();
     my ($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};
@@ -2327,18 +2475,17 @@ sub editgrades {
 		$newrecord{'resource.'.$_.'.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) {
@@ -2515,8 +2662,8 @@ ENDPICK
 }
 
 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 $part (sort(@parts)) {
 	my @datum;
@@ -2599,7 +2746,7 @@ sub csvuploadmap {
     &csvuploadmap_header($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);
@@ -2726,7 +2873,9 @@ 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 +2895,7 @@ 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>'.
@@ -2798,9 +2947,7 @@ 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 = ();
@@ -2845,9 +2992,8 @@ sub displayPage {
     &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(),
@@ -2888,8 +3034,9 @@ 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;
@@ -2910,9 +3057,16 @@ 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' : '');
@@ -2947,7 +3101,7 @@ sub displayPage {
 }
 
 sub displaySubByDates {
-    my ($symbx,$record,$parts,$responseType,$checkIcon) = @_;
+    my ($symb,$record,$parts,$responseType,$checkIcon,$uname,$udom) = @_;
     my $studentTable='<table border="0" width="100%"><tr><td bgcolor="#777777">'.
 	'<table border="0" width="100%"><tr bgcolor="#e6ffff">'.
 	'<td><b>Date/Time</b></td>'.
@@ -2955,33 +3109,62 @@ sub displaySubByDates {
 	'<td><b>Status&nbsp;</b></td></tr>';
     my ($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"}) ?
-	    $$record{"$version:resource.regrader"} : ''; # needed because old essay regrader has not parts info
-	$studentTable.='<td>'.$displaySub[0].'&nbsp;</td><td>'.$displaySub[1].
-	    ($displaySub[2] eq '' ? '' : 'Manually graded by '.$displaySub[2]).'&nbsp;</td></tr>';
+	    foreach my $matchKey (@matchKey) {
+		if (exists $$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;
@@ -3008,9 +3191,8 @@ sub updateGradeByPage {
 
     $request->print($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(),
@@ -3132,7 +3314,7 @@ 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+)\.(.*)/);
@@ -3146,8 +3328,6 @@ sub getSequenceDropDown {
 }
 
 sub scantron_uploads {
-    #FIXME need to support scantron files put in another location,
-    # maybe the course directory? a scantron dir in the course directory?
     if (!-e $Apache::lonnet::perlvar{'lonScansDir'}) { return ''};
     my $result=	'<select name="scantron_selectfile">';
     opendir(DIR,$Apache::lonnet::perlvar{'lonScansDir'});
@@ -3184,8 +3364,6 @@ 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_validate" />
@@ -3214,13 +3392,6 @@ sub scantron_selectphase {
               Format of data file: $format_selector
 	    </td>
           </tr>
-          <tr bgcolor="#ffffe6">
-            <td>
-<!-- FIXME this is lazy, a single parse of the set should let me know what this is -->
-              Last line to expect an answer on: 
-                <input type="text" name="scantron_maxbubble" />
-	    </td>
-          </tr>
         </table>
       </td>
     </tr>
@@ -3237,7 +3408,6 @@ sub get_scantron_config {
     my ($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; }
@@ -3254,12 +3424,6 @@ 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;
@@ -3275,53 +3439,8 @@ 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,
-	       $$scantron_config{'IDlength'})=$args->{'newid'};
-	if ($args->{'newid'}=~/^\s*$/) {
-	    &scan_data($scan_data,"$whichline.user",
-		       $args->{'username'}.':'.$args->{'domain'});
-	}
-    } elsif ($field eq 'answer') {
-	my $length=$scantron_config->{'Qlength'};
-	my $off=$scantron_config->{'Qoff'};
-	my $on=$scantron_config->{'Qon'};
-	my $answer=${off}x$length;
-	if ($args->{'response'} eq 'none') {
-	    &scan_data($scan_data,
-		       "$whichline.no_bubble.".$args->{'question'},'1');
-	} else {
-	    substr($answer,$args->{'response'},1)=$on;
-	    &scan_data($scan_data,
-		       "$whichline.no_bubble.".$args->{'question'},undef,'1');
-	}
-	my $where=$length*($args->{'question'}-1)+$scantron_config->{'Qstart'};
-	substr($line,$where-1,$length)=$answer;
-    }
-    return $line;
-}
-
-sub scan_data {
-    my ($scan_data,$key,$value,$delete)=@_;
-    my $filename=$ENV{'form.scantron_selectfile'};
-    if (defined($value)) {
-	$scan_data->{$filename.'_'.$key} = $value;
-    }
-    if ($delete) { delete($scan_data->{$filename.'_'.$key}); }
-    return $scan_data->{$filename.'_'.$key};
-}
-
 sub scantron_parse_scanline {
-    my ($line,$whichline,$scantron_config,$scan_data)=@_;
+    my ($line,$scantron_config)=@_;
     my %record;
     my $questions=substr($line,$$scantron_config{'Qstart'}-1);
     my $data=substr($line,0,$$scantron_config{'Qstart'}-1);
@@ -3335,15 +3454,6 @@ sub scantron_parse_scanline {
     }
     $record{'scantron.ID'}=substr($data,$$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,
-	       $$scantron_config{'LastNamelength'});
     my @alphabet=('A'..'Z');
     my $questnum=0;
     while ($questions) {
@@ -3351,26 +3461,17 @@ sub scantron_parse_scanline {
 	my $currentquest=substr($questions,0,$$scantron_config{'Qlength'});
 	substr($questions,0,$$scantron_config{'Qlength'})='';
 	if (length($currentquest) < $$scantron_config{'Qlength'}) { next; }
-	my @array=split($$scantron_config{'Qon'},$currentquest,-1);
+	my (@array)=split(/$$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.'-'.$questnum.'</pre><br />');
+	}
 	if (length($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) {
-	    Apache->request->print("snippet is <pre>$currentquest</pre>");
-	    push(@{$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;
@@ -3386,11 +3487,8 @@ sub scantron_add_delay {
 }
 
 sub scantron_find_student {
-    my ($scantron_record,$scan_data,$idmap,$line)=@_;
+    my ($scantron_record,$idmap)=@_;
     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)) {
@@ -3409,403 +3507,31 @@ 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);
-    }
-}
-
+#FIXME I think I am doing this in the wrong order, I think it would be
+#better to make a several passes analyzing all of the lines in the
+#file for common errors wrong/invalid PID/username duplicated
+#PID/username, missing bubbles, double bubbles, missing/invalid CODE
+#and then get the instructor to fix all of these errors, then grade
+#the corrected one, I'll still need to catch error conditions, but
+#maybe most will taken care even before we start
 
 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, click 'Submit' to start proccssing");
-	$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."' />");
-    }
-    $r->print('<input type="submit" name="submit" /></form></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'});
-    if ($lines eq '-1') {
-	#FIXME need to actually replicate file to course space
-	#FIXME when replicating strip CRLF to LF or CR to LF
-    }
-    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) { next; }
-	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
-						 $scan_data);
-	my $id=$$scan_record{'scantron.ID'};
-#	$r->print("<p>Checking ID ".$$scan_record{'scantron.ID'}.
-#		  " on paper ID ".$$scan_record{'scantron.PaperID'}."</p>\n");
-	my $found;
-	foreach my $checkid (keys(%idmap)) {
-	    if (lc($checkid) eq lc($id)) {
-		if ($checkid ne $id) {
-		    #$r->print("<p>Using $checkid for encoded $id</p>\n");
-		}
-		$found=$checkid;last;
-	    }
-	}
-	if ($found) {
-	    my $username=$idmap{$found};
-	    if ($found{'ids'}{$found}) {
-		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
-					 $line,'duplicateID',$found);
-		return(1);
-	    } elsif ($found{'usernames'}{$username}) {
-		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
-					 $line,'duplicateID',$username);
-		return(1);
-	    }
-	    #FIXME store away line we prviously saw the ID on to use above
-	    $found{'ids'}{$found}++;
-	    $found{'usernames'}{$username}++;
-	} else {
-	    if ($id =~ /^\s*$/) {
-		my $username=&scan_data($scan_data,"$i.user");
-		if (defined($username) && $found{'usernames'}{$username}) {
-		    &scantron_get_correction($r,$i,$scan_record,
-					     \%scantron_config,
-					     $line,'duplicateID',$username);
-		    return(1);
-		} elsif (!defined($username)) {
-		    &scantron_get_correction($r,$i,$scan_record,
-					     \%scantron_config,
-					     $line,'incorrectID');
-		    return(1);
-		}
-		$found{'usernames'}{$username}++;
-	    } else {
-		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
-					 $line,'incorrectID');
-		return(1);
-	    }
-	}
-    }
-
-    return (0,$currentphase+1);
-}
-
-sub scantron_get_correction {
-    my ($r,$i,$scan_record,$scan_config,$line,$error,$arg)=@_;
-
-#FIXME in the case of a duplicated ID the previous line, probaly need
-#to show both the current line and the previous one and allow skipping
-#the previous one or the current one
-
-    $r->print("<p>This scantron record has an error ($error). ");
-    if ( defined($$scan_record{'scantron.PaperID'}) ) {
-	$r->print("The current PaperID is <tt>".
-		  $$scan_record{'scantron.PaperID'}."</tt> \n");
-    } else {
-	$r->print("The current scanline is <pre>".
-		  $line."</pre> \n");
-    }
-    $r->print('<input type="hidden" name="scantron_corrections" value="'.$error.'" />'."\n");
-    $r->print('<input type="hidden" name="scantron_line" value="'.$i.'" />'."\n");
-    if ($error =~ /ID$/) {
-	if ($error eq 'unknownID') {
-	    $r->print("The encoded ID is not in the classlist</p>\n");
-	} elsif ($error eq 'duplicateID') {
-	    $r->print("The encoded ID has also been used by a previous paper $arg</p>\n");
-	}
-	$r->print("<p>Original ID is <tt>".$$scan_record{'scantron.ID'}.
-		  "</tt><br />\n");
-	$r->print("Name on paper is ".$$scan_record{'scantron.LastName'}.",".
-		  $$scan_record{'scantron.FirstName'}."</p>");
-	$r->print("<p>Please correct <br /> \n");
-	$r->print("\n<ul><li> Pick a specific user -- username:<input type='text' name='scantron_username' value='' />");
-	$r->print("\ndomain:".
-		 &Apache::loncommon::select_dom_form(undef,'scantron_domain'));
-	#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'));
-	$r->print('</li>');
-    } elsif ($error eq 'doublebubble') {
-	$r->print("<pre>$line</pre>");
-	$Apache::lonxml::debug=1;
-	&Apache::lonhomework::showhashsubset($scan_record,'.');
-	$Apache::lonxml::debug=0;
-	$r->print("There have been multiple bubbles scanned for a single question\n");
-	$r->print('<input type="hidden" name="scantron_questions" value="'.
-		  join(',',@{$arg}).'" />');
-	foreach my $question (@{$arg}) {
-	    my $selected=$$scan_record{"scantron.$question.answer"};
-	    $r->print("<p> For question $question, selected bubbles were ".
-		      join(" ",split('',$selected,-1)).
-              " <br />Please pick which one should be used for grading<br />");
-	    &scantron_bubble_selector($r,$scan_config,$question);
-	}
-    } elsif ($error eq 'missingbubble') {
-	$r->print("Some questions have no scanned bubbles\n");
-	$r->print('<input type="hidden" name="scantron_questions" value="'.
-		  join(',',@{$arg}).'" />');
-	foreach my $question (@{$arg}) {
-	    my $selected=$$scan_record{"scantron.$question.answer"};
-	    $r->print("<p>Question $question, Please select a bubble to use ");
-	    &scantron_bubble_selector($r,$scan_config,$question);
-	}
-    } else {
-	$r->print("\n<ul>");
-    }
-    $r->print("<li>Skip this scanline saving it for later  ");
-    $r->print("\n<input type='checkbox' name='scantron_skip_record' /> </li></ul>");
-}
-
-sub scantron_bubble_selector {
-    my ($r,$scan_config,$quest)=@_;
-    my $max=$$scan_config{'Qlength'};
-    my @alphabet=('A'..'Z');
-    for (my $i=0;$i<$max;$i++) {
-	$r->print('<input type="radio" name="scantron_correct_Q_'.$quest.
-		  '" value="'.$i.'" />'.$alphabet[$i]);
-    }
-    $r->print('<input type="radio" name="scantron_correct_Q_'.$quest.
-	      '" value="none" /> Nothing');
-    $r->print('<br />');
-}
-
-sub scantron_validate_CODE {
-    my ($r,$currentphase) = @_;
-    #FIXME doesn't do anything yet
-    return (0,$currentphase+1);
-}
-
-sub scantron_validate_doublebubble {
-    my ($r,$currentphase) = @_;
-    #get student info
-    my $classlist=&Apache::loncoursedata::get_classlist();
-    my %idmap=&username_to_idmap($classlist);
-
-    #get scantron line setup
-    my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
-    my ($scanlines,$scan_data)=&scantron_getfile();
-    for (my $i=0;$i<=$scanlines->{'count'};$i++) {
-	my $line=&scantron_get_line($scanlines,$i);
-	if (!$line) { next; }
-	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
-						 $scan_data);
-	if (!defined($$scan_record{'scantron.doubleerror'})) { next; }
-	&scantron_get_correction($r,$i,$scan_record,\%scantron_config,$line,
-				 'doublebubble',
-				 $$scan_record{'scantron.doubleerror'});
-    	return (1,$currentphase);
-    }
-    return (0,$currentphase+1);
-}
-
-sub scantron_validate_missingbubbles {
-    my ($r,$currentphase) = @_;
-    #get student info
-    my $classlist=&Apache::loncoursedata::get_classlist();
-    my %idmap=&username_to_idmap($classlist);
-
-    #get scantron line setup
-    my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
-    my ($scanlines,$scan_data)=&scantron_getfile();
-    my $max_bubble=$ENV{'form.scantron_maxbubble'};
-    if (!$max_bubble) { $max_bubble=2**31; }
-    for (my $i=0;$i<=$scanlines->{'count'};$i++) {
-	my $line=&scantron_get_line($scanlines,$i);
-	if (!$line) { next; }
-	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
-						 $scan_data);
-	if (!defined($$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,$scan_data)=&scantron_getfile();
+    my $scanlines=Apache::File->new($Apache::lonnet::perlvar{'lonScansDir'}."/$ENV{'form.scantron_selectfile'}");
+    my @scanlines=<$scanlines>;
     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 />");
@@ -3819,25 +3545,18 @@ SCANTRONFORM
     my @delayqueue;
     my %completedstudents;
     
-    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Scantron Status',
-				    'Scantron Progress',$scanlines->{'count'});
+    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,
+	           'Scantron Status','Scantron Progress',scalar(@scanlines));
     &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,
 					  'Processing first student');
     my $start=&Time::HiRes::time();
-    my $i=-1;
-    while ($i<$scanlines->{'count'}) {
-	$i++;
-	my $line=&scantron_get_line($scanlines,$i);
+    foreach my $line (@scanlines) {
 	$r->print('<pre>line is'.$line.'</pre>');
-	if (!defined($line)) { 
-	    $r->print('skipping');
-	    next;
-	}
-	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
-						 $scan_data);
+
+	chomp($line);
+	my $scan_record=&scantron_parse_scanline($line,\%scantron_config);
 	my ($uname,$udom);
-	unless ($uname=&scantron_find_student($scan_record,$scan_data,
-					      \%idmap,$i)) {
+	unless ($uname=&scantron_find_student($scan_record,\%idmap)) {
 	    &scantron_add_delay(\@delayqueue,$line,
 				'Unable to find a student that matches',1);
 	    next;
@@ -3917,18 +3636,6 @@ SCANTRONFORM
     
     $navmap->untieHashes();
 }
-
-sub scantron_upload_scantron_data {
-    my ($r)=@_;
-    $r->print(&Apache::loncommon::coursebrowser_javascript($ENV{'request.role.domain'}));
-    $r->print(&Apache::loncommon::selectcourse_link('rules',
-			  'courseid','domain'));
-    $r->print("Course: <input name='courseid' type='text'/>");
-    $r->print("Domain: <input name='domain' type='text'/>");
-
-    return '';
-
-}
 #-------- end of section for handling grading scantron forms -------
 #
 #-------------------------------------------------------------------
@@ -3980,7 +3687,7 @@ 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;}
@@ -4048,12 +3755,14 @@ GRADINGMENUJS
 
     $result.='<tr bgcolor="#ffffe6"valign="top"><td>'.
 	'<input type="radio" name="radioChoice" value="submission" '.
-	($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" '.
+	($saveSub eq 'graded' ? 'selected="on"' : '').'>with ungraded submissions</option>'.
+	'<option value="all" '.
+	($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" '.
@@ -4099,9 +3808,9 @@ 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;
@@ -4111,7 +3820,7 @@ sub handler {
     my $command=$ENV{'form.command'};
     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);
@@ -4124,7 +3833,7 @@ 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' => $tuname,
@@ -4156,6 +3865,7 @@ sub handler {
 		delete($perm{'mgr'});
 	    }
 	}
+
 	if ($command eq 'submission' && $perm{'vgr'}) {
 	    ($ENV{'form.student'} eq '' ? &listStudents($request) : &submission($request,0,0));
 	} elsif ($command eq 'pickStudentPage' && $perm{'vgr'}) {
@@ -4199,8 +3909,6 @@ sub handler {
 	    $request->print(&scantron_validate_file($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) {
 	    $request->print("Access Denied");
 	}
@@ -4218,7 +3926,6 @@ sub send_header {
 #remotewindow.close();
 #</script>"); 
     $request->print(&Apache::loncommon::bodytag('Grading'));
-    $request->rflush();
 }
 
 sub send_footer {