diff --git a/content/tempus.js.php b/content/tempus.js.php
index a5103d8e4..862e7a341 100644
--- a/content/tempus.js.php
+++ b/content/tempus.js.php
@@ -284,4 +284,12 @@ function UnDo(log_id, bezeichnung)
 			LvTreeRefresh();
 		}
 	}
+}
+
+// ****
+// * Oeffnet die ToDoListe fuers Tempus
+// ****
+function HelpOpenToDo()
+{
+	window.open('ToDo_Tempus.html','ToDo');
 }
\ No newline at end of file
diff --git a/content/tempus.xul.php b/content/tempus.xul.php
index e51a31137..a4a2d8173 100644
--- a/content/tempus.xul.php
+++ b/content/tempus.xul.php
@@ -54,6 +54,7 @@ echo '<?xul-overlay href="'.APP_ROOT.'content/tempusoverlay.xul.php"?>';
   <command id="menu-prefs-ignore_kollision:command" oncommand="variableChange('ignore_kollision','menu-prefs-ignore_kollision');"/>
   <command id="menu-prefs-ignore_zeitsperre:command" oncommand="variableChange('ignore_zeitsperre','menu-prefs-ignore_zeitsperre');"/>
   <command id="menu-prefs-ignore_reservierung:command" oncommand="variableChange('ignore_reservierung','menu-prefs-ignore_reservierung');"/>
+  <command id="menu-help-todo:command" oncommand="HelpOpenToDo();"/>
 </commandset>
 
 <keyset id="mainkeys">
@@ -178,6 +179,12 @@ echo '<?xul-overlay href="'.APP_ROOT.'content/tempusoverlay.xul.php"?>';
                label     = "&menu-help-close.label;"
                command   =  "menu-help-close:command"
                accesskey = "&menu-help-close.accesskey;"/>
+            <menuitem
+               id        =  "menu-help-todo"
+               key       = "&menu-help-todo.key;"
+               label     = "&menu-help-todo.label;"
+               command   =  "menu-help-todo:command"
+               accesskey = "&menu-help-todo.accesskey;"/>
           </menupopup>
     </menu>
   </menubar>
diff --git a/locale/de-AT/tempus.dtd b/locale/de-AT/tempus.dtd
index 924aa9484..691faa80f 100644
--- a/locale/de-AT/tempus.dtd
+++ b/locale/de-AT/tempus.dtd
@@ -49,3 +49,7 @@
 <!ENTITY menu-prefs-ignore_kollision.key      	"k">
 <!ENTITY menu-prefs-ignore_kollision.label    	"ignore_kollision">
 <!ENTITY menu-prefs-ignore_kollision.accesskey	"k">
+
+<!ENTITY menu-help-todo.key          	"T">
+<!ENTITY menu-help-todo.label        	"ToDo">
+<!ENTITY menu-help-todo.accesskey    	"T">