Index: typo3/js/extjs/viewportConfiguration.js
===================================================================
--- typo3/js/extjs/viewportConfiguration.js	(Revision 10184)
+++ typo3/js/extjs/viewportConfiguration.js	(Arbeitskopie)
@@ -54,6 +54,8 @@
 			floatable: true,
 			hideCollapseTool: true,
 			split: true,
+			useSplitTips: true,
+			splitTip: top.TYPO3.LLL.viewPort.tooltipModulemenuSplit,
 			border: false,
 			autoScroll: true
 		},
@@ -73,6 +75,8 @@
 					split: true,
 					collapsible: true,
 					collapseMode: 'mini',
+					useSplitTips: true,
+					collapsibleSplitTip: top.TYPO3.LLL.viewPort.tooltipNavigationcontainerSplitDrag,
 					hideCollapseTool: true,
 					hidden: true,
 					border: false,
@@ -120,6 +124,8 @@
 					hideCollapseTool: true,
 					animCollapse: false,
 					split: true,
+					useSplitTips: true,
+					collapsibleSplitTip: top.TYPO3.LLL.viewPort.tooltipDebugpanelSplitDrag,
 					autoScroll: true,
 					hidden: true,
 					height: 200,
Index: typo3/backend.php
===================================================================
--- typo3/backend.php	(Revision 10185)
+++ typo3/backend.php	(Arbeitskopie)
@@ -529,6 +529,12 @@
 				'timeoutHeader',
 				'timeoutMessage',
 			),
+			'viewPort' => array(
+				'tooltipModulemenuSplit',
+				'tooltipNavigationcontainerSplitDrag',
+				'tooltipDebugpanelSplitDrag',
+
+			),
 		);
 		$generatedLabels = array();
 		$generatedLabels['core'] = $coreLabels;
Index: typo3/sysext/lang/locallang_misc.xml
===================================================================
--- typo3/sysext/lang/locallang_misc.xml	(Revision 10184)
+++ typo3/sysext/lang/locallang_misc.xml	(Arbeitskopie)
@@ -149,6 +149,9 @@
 			<label index="liveSearch_helpDescriptionPages">#page:Home will search for all pages with the title "Home"</label>
 			<label index="extDirect_timeoutHeader">Connection Problem</label>
 			<label index="extDirect_timeoutMessage">Sorry, but an error occurred while connecting to the server. Please check your network connection.</label>
+			<label index="viewPort_tooltipModulemenuSplit">Drag to resize the Modules Menu</label>
+			<label index="viewPort_tooltipNavigationcontainerSplitDrag">Drag to resize or double click to collapse the Tree</label>
+			<label index="viewPort_tooltipDebugpanelSplitDrag">Drag to resize or click to collapse the Debug Panel.</label>
 		</languageKey>
 	</data>
 </T3locallang>