--- loncom/xml/lonxml.pm	2007/04/16 18:47:46	1.444
+++ loncom/xml/lonxml.pm	2007/05/31 04:15:59	1.447
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # XML Parser Module 
 #
-# $Id: lonxml.pm,v 1.444 2007/04/16 18:47:46 albertel Exp $
+# $Id: lonxml.pm,v 1.447 2007/05/31 04:15:59 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -599,9 +599,9 @@ sub callsub {
 	      }
 	  }
 	  if ($token->[0] eq 'S') {
-	    $currentstring.=&Apache::edit::handle_insert();
+	      $currentstring.=&Apache::edit::handle_insert();
 	  } elsif ($token->[0] eq 'E') {
-            $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
+	      $currentstring.=&Apache::edit::handle_insertafter($token->[1]);
 	  }
       }
     }
@@ -997,6 +997,24 @@ sub get_all_text_unbalanced {
     return $result
 }
 
+=pod
+
+For bubble grading mode and exam bubble printing mode, the tracking of
+the current 'bubble line number' is stored in the %env element
+'form.counter', and is modifed and handled by the following routines.
+
+The value of it is stored in $Apache:lonxml::counter when live and
+stored back to env after done.
+
+=item &increment_counter($increment);
+
+Increments the internal counter environment variable a specified amount
+
+Optional Arguments:
+  $increment - amount to increment by (defaults to 1)
+
+=cut
+
 sub increment_counter {
     my ($increment) = @_;
     if (defined($increment) && $increment gt 0) {
@@ -1007,6 +1025,14 @@ sub increment_counter {
     $Apache::lonxml::counter_changed=1;
 }
 
+=pod
+
+=item &init_counter($increment);
+
+Initialize the internal counter environment variable
+
+=cut
+
 sub init_counter {
     if ($env{'request.state'} eq 'construct') {
 	$Apache::lonxml::counter=1;
@@ -1744,10 +1770,12 @@ sub register_insert_xml {
     
     # parse the allows and ignore tags set to <show>no</show>
     foreach my $tag (@alltags) {	
+        next if (!exists($insertlist{"$tag.allow"}));
 	my $allow =  $insertlist{"$tag.allow"};
        	foreach my $element (split(',',$allow)) {
 	    $element =~ s/(^\s*|\s*$ )//gx;
-	    if ($insertlist{"$element.show"} ne 'no') {
+	    if (!exists($insertlist{"$element.show"})
+                || $insertlist{"$element.show"} ne 'no') {
 		push(@{ $insertlist{$tag.'.which'} },$element);
 	    }
 	}