--- loncom/interface/londocs.pm	2016/07/01 19:59:36	1.608
+++ loncom/interface/londocs.pm	2016/10/31 19:48:59	1.610
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Documents
 #
-# $Id: londocs.pm,v 1.608 2016/07/01 19:59:36 raeburn Exp $
+# $Id: londocs.pm,v 1.610 2016/10/31 19:48:59 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -3888,7 +3888,7 @@ END
 	}
     }
 
-    my ($editlink,$extresform);
+    my ($editlink,$extresform,$anchor);
     my $orig_url = $url;
     $orig_url=~s{http(:|:)//https(:|:)//}{https$2//};
     $url=~s{^http(|s)(:|:)//}{/adm/wrapper/ext/};
@@ -3912,11 +3912,28 @@ END
 		$url='/adm/wrapper'.$url;
             }
             if (&Apache::lonnet::symbverify($symb,$url)) {
-	        $url.=(($url=~/\?/)?'&':'?').'symb='.&escape($symb);
+                my $shownsymb = $symb;
+                if ($isexternal) {
+                    if ($url =~ /^([^#]+)#([^#]+)$/) {
+                        $url = $1;
+                        $anchor = $2;
+                        if ($symb =~ m{^([^#]+)\Q#$anchor\E$}) {
+                            $shownsymb = $1.&escape('#').$anchor;
+                        }
+                    }
+                }
+                $url.=(($url=~/\?/)?'&':'?').'symb='.&HTML::Entities::encode($shownsymb,'"<>&');
             } else {
                 $url='';
             }
 	}
+    } elsif ($supplementalflag) { 
+        if ($isexternal) {
+            if ($url =~ /^([^#]+)#([^#]+)$/) {
+                $url = $1;
+                $anchor = $2;
+            }
+        }
     }
     my ($rand_pick_text,$rand_order_text);
     if ($isfolder || $ispage || $extension eq 'sequence' || $extension eq 'page') {
@@ -3989,6 +4006,9 @@ $form_end;
         if ((($isexternal) || ($isexttool)) && $orderidx) {
             $url .= '&amp;idx='.$orderidx;
         }
+        if ($anchor ne '') {
+            $url .= '&amp;anchor='.&HTML::Entities::encode($anchor,'"<>&');
+        }
     }
     my ($tdalign,$tdwidth);
     if ($allowed) {
@@ -4006,13 +4026,17 @@ $form_end;
             my ($cfile,$home,$switchserver,$forceedit,$forceview) = 
                 &Apache::lonnet::can_edit_resource($fileloc,$coursenum,$coursedom,$orig_url);
             if (($cfile ne '') && ($symb ne '' || $supplementalflag)) {
+                my $suppanchor;
+                if ($supplementalflag) {
+                    $suppanchor = $anchor;
+                }
                 my $jscall = 
                     &Apache::lonhtmlcommon::jump_to_editres($cfile,$home,
                                                             $switchserver,
                                                             $forceedit,
                                                             undef,$symb,
                                                             &escape($env{'form.folderpath'}),
-                                                            $renametitle,'','',1);
+                                                            $renametitle,'','',1,$suppanchor);
                 if ($jscall) {
                     $editlink = '<a class="LC_docs_ext_edit" href="javascript:'.
                                 $jscall.'" >'.&mt('Edit').'</a>&nbsp;'."\n";
@@ -4032,7 +4056,15 @@ $form_end;
     if (($url=~m{/adm/(coursedocs|supplemental)}) || (!$allowed && $url)) {
        $line.='<a href="'.$url.'"><img src="'.$icon.'" alt="" class="LC_icon" /></a>';
     } elsif ($url) {
-       $line.=&Apache::loncommon::modal_link($url.(($url=~/\?/)?'&amp;':'?').'inhibitmenu=yes',
+       if ($anchor ne '') {
+           if ($supplementalflag) {
+               $anchor = '&amp;anchor='.&HTML::Entities::encode($anchor,'"<>&');
+           } else {
+               $anchor = '#'.&HTML::Entities::encode($anchor,'"<>&');
+           }
+       }
+       $line.=&Apache::loncommon::modal_link($url.(($url=~/\?/)?'&amp;':'?').'inhibitmenu=yes'.
+                                             (($anchor ne '')?$anchor:''),
                                              '<img src="'.$icon.'" alt="" class="LC_icon" />',600,500);
     } else {
        $line.='<img src="'.$icon.'" alt="" class="LC_icon" />';
@@ -4041,7 +4073,8 @@ $form_end;
     if (($url=~m{/adm/(coursedocs|supplemental)}) || (!$allowed && $url)) {
        $line.='<a href="'.$url.'">'.$title.'</a>';
     } elsif ($url) {
-       $line.=&Apache::loncommon::modal_link($url.(($url=~/\?/)?'&amp;':'?').'inhibitmenu=yes',
+       $line.=&Apache::loncommon::modal_link($url.(($url=~/\?/)?'&amp;':'?').'inhibitmenu=yes'.
+                                             (($anchor ne '')?$anchor:''),
                                              $title,600,500);
     } else {
        $line.=$title.' <span class="LC_docs_reinit_warn">'.$reinit.'</span>';
@@ -6542,8 +6575,19 @@ sub editing_js {
             my ($map,$id,$res)=&Apache::lonnet::decode_symb($caller);
             $res = &Apache::lonnet::clutter($res);
             if (&Apache::lonnet::is_on_map($res)) {
-                $backtourl = &HTML::Entities::encode(&Apache::lonnet::clutter($res),'<>&"').'?symb='.
+                my ($url,$anchor);
+                if ($res =~ /^([^#]+)#([^#]+)$/) {
+                    $url = $1;
+                    $anchor = $2;
+                    if (($caller =~ m{^([^#]+)\Q#$anchor\E$})) {
+                        $caller = $1.&escape('#').$anchor;
+                    }
+                }
+                $backtourl = &HTML::Entities::encode(&Apache::lonnet::clutter($url),'<>&"').'?symb='.
                              &HTML::Entities::encode($caller,'<>&"');
+                if ($anchor ne '') {
+                    $backtourl .= '#'.&HTML::Entities::encode($anchor,'<>&"');
+                }
                 $backtourl = &Apache::loncommon::escape_single($backtourl);
             } else {
                 $backtourl = '/adm/navmaps';