--- loncom/interface/lonnavmaps.pm	2016/08/05 22:13:46	1.509.2.1
+++ loncom/interface/lonnavmaps.pm	2016/03/02 00:51:15	1.513
@@ -1,8 +1,7 @@
 # The LearningOnline Network with CAPA
 # Navigate Maps Handler
 #
-# $Id: lonnavmaps.pm,v 1.509.2.1 2016/08/05 22:13:46 raeburn Exp $
-
+# $Id: lonnavmaps.pm,v 1.513 2016/03/02 00:51:15 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -4533,7 +4532,7 @@ sub duedate {
     my $due_date=$self->parmval("duedate", $part);
     if ($interval[0] =~ /\d+/) {
        my $first_access=&Apache::lonnet::get_first_access($interval[1],
-                                                          $self->{SYMB});
+                                                          $self->symb);
 	if (defined($first_access)) {
            my $interval = $first_access+$interval[0];
 	    $date = (!$due_date || $interval < $due_date) ? $interval 
@@ -4615,7 +4614,7 @@ sub part_display {
     my $self= shift(); my $partID = shift();
     if (! defined($partID)) { $partID = '0'; }
     my $display=&Apache::lonnet::EXT('resource.'.$partID.'.display',
-                                     $self->{SYMB});
+                                     $self->symb);
     if (! defined($display) || $display eq '') {
         $display = $partID;
     }
@@ -5476,18 +5475,61 @@ sub check_for_slot {
         my $reservable = &Apache::lonnet::get_reservable_slots($cnum,$cdom,$env{'user.name'},
                                                                $env{'user.domain'});
         if (ref($reservable) eq 'HASH') {
+            my ($map) = &Apache::lonnet::decode_symb($symb);
             if ((ref($reservable->{'now_order'}) eq 'ARRAY') && (ref($reservable->{'now'}) eq 'HASH')) {
                 foreach my $slot (reverse (@{$reservable->{'now_order'}})) {
-                    if (($reservable->{'now'}{$slot}{'symb'} eq '') ||
-                        ($reservable->{'now'}{$slot}{'symb'} eq $symb)) {
+                    my $canuse;
+                    if ($reservable->{'now'}{$slot}{'symb'} eq '') {
+                        $canuse = 1;
+                    } else {
+                        my %oksymbs;
+                        my @slotsymbs = split(/\s*,\s*/,$reservable->{'now'}{$slot}{'symb'});
+                        map { $oksymbs{$_} = 1; } @slotsymbs;
+                        if ($oksymbs{$symb}) {
+                            $canuse = 1;
+                        } else {
+                            foreach my $item (@slotsymbs) {
+                                if ($item =~ /\.(page|sequence)$/) {
+                                    (undef,undef, my $sloturl) = &Apache::lonnet::decode_symb($item);
+                                    if (($map ne '') && ($map eq $sloturl)) {
+                                        $canuse = 1;
+                                        last;
+                                    }
+                                }
+                            }
+                        }
+                    }
+                    if ($canuse) {
                         return(RESERVABLE,$reservable->{'now'}{$slot}{'endreserve'});
                     }
                 }
             }
             if ((ref($reservable->{'future_order'}) eq 'ARRAY') && (ref($reservable->{'future'}) eq 'HASH')) {
                 foreach my $slot (@{$reservable->{'future_order'}}) {
-                    if (($reservable->{'future'}{$slot}{'symb'} eq '') ||
-                        ($reservable->{'future'}{$slot}{'symb'} eq $symb)) {
+                    my $canuse;
+                    if ($reservable->{'future'}{$slot}{'symb'} eq '') {
+                        $canuse = 1;
+                    } elsif ($reservable->{'future'}{$slot}{'symb'} =~ /,/) {
+                        my %oksymbs;
+                        my @slotsymbs = split(/\s*,\s*/,$reservable->{'future'}{$slot}{'symb'});
+                        map { $oksymbs{$_} = 1; } @slotsymbs;
+                        if ($oksymbs{$symb}) {
+                            $canuse = 1;
+                        } else {
+                            foreach my $item (@slotsymbs) {
+                                if ($item =~ /\.(page|sequence)$/) {
+                                    (undef,undef, my $sloturl) = &Apache::lonnet::decode_symb($item);
+                                    if (($map ne '') && ($map eq $sloturl)) {
+                                        $canuse = 1;
+                                        last;
+                                    }
+                                }
+                            }
+                        }
+                    } elsif ($reservable->{'future'}{$slot}{'symb'} eq $symb) {
+                        $canuse = 1;
+                    }
+                    if ($canuse) {
                         return(RESERVABLE_LATER,$reservable->{'future'}{$slot}{'startreserve'});
                     }
                 }