diff --git a/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/extension/IModelEditor.java b/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/extension/IModelEditor.java
index ac8290e0080fcbd21f1f1ac2ecdf9d200c46bd68..3caba2c5e8f0f42e0ed2c99e9c44c9f14b927f71 100644
--- a/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/extension/IModelEditor.java
+++ b/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/extension/IModelEditor.java
@@ -26,11 +26,9 @@ import org.eclipse.ui.IEditorPart;
  * @author hoelzl
  * @author $Author$
  * @version $Rev$
- * @ConQAT.Rating RED Hash:
+ * @ConQAT.Rating YELLOW Hash: F0A94041C50D164FB6A321C68DB038D5
  */
 public interface IModelEditor<T extends EObject> extends IEditorPart {
-	// FIXME (FH): define
-
 	/** Returns the edited object. */
 	T getEditedObject();
 
@@ -39,5 +37,4 @@ public interface IModelEditor<T extends EObject> extends IEditorPart {
 
 	/** Clears all highlightings from the editor. */
 	void clearAllHighlights();
-
 }
diff --git a/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/internal/ModelEditorBindingService.java b/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/internal/ModelEditorBindingService.java
index 772e569fec5c6187fdff97b2a04138940b64b670..8e0002d40b1356064e0fb7b94873fc4b5ed82bf9 100644
--- a/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/internal/ModelEditorBindingService.java
+++ b/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/internal/ModelEditorBindingService.java
@@ -52,7 +52,7 @@ import org.fortiss.tooling.kernel.utils.ModelElementUtils;
  * @author hoelzl
  * @author $Author$
  * @version $Rev$
- * @ConQAT.Rating YELLOW Hash: D719F4D54DBF1707B1BE0B6FEA65624A
+ * @ConQAT.Rating YELLOW Hash: 3B1883C7F53B739120A1E2B507BCB8AB
  */
 public class ModelEditorBindingService extends
 		EObjectAwareServiceBase<IModelEditorBinding<EObject>> implements
@@ -259,9 +259,14 @@ public class ModelEditorBindingService extends
 		IEditorPart activeEditor = PlatformUI.getWorkbench()
 				.getActiveWorkbenchWindow().getActivePage().getActiveEditor();
 		if (activeEditor instanceof ExtendableMultiPageEditor) {
-			return ((ExtendableMultiPageEditor) activeEditor)
-					.getActiveModelEditor();
-		} else if (activeEditor instanceof IModelEditor) {
+			ExtendableMultiPageEditor extEditor = (ExtendableMultiPageEditor) activeEditor;
+			IModelEditor<EObject> inner = extEditor.getActiveModelEditor();
+			if (inner != null) {
+				return inner;
+			}
+			return extEditor;
+		}
+		if (activeEditor instanceof IModelEditor) {
 			return (IModelEditor<EObject>) activeEditor;
 		}
 		return null;
diff --git a/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/internal/editor/ExtendableMultiPageEditor.java b/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/internal/editor/ExtendableMultiPageEditor.java
index 5708234da7d5aa0e5c74d4878b13aa29fab955c9..5d099560bafb77b8088ca627d4db09ee6374b7a6 100644
--- a/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/internal/editor/ExtendableMultiPageEditor.java
+++ b/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/internal/editor/ExtendableMultiPageEditor.java
@@ -61,8 +61,7 @@ import org.fortiss.tooling.kernel.ui.util.PropertiesConstantUtils;
  */
 public class ExtendableMultiPageEditor extends MultiPageEditorPart implements
 		ITabbedPropertySheetPageContributor, CommandStackListener,
-		ISaveablePart {
-
+		ISaveablePart, IModelEditor<EObject> {
 	/** The editor's ID. */
 	public static String ID = ExtendableMultiPageEditor.class.getName();
 
@@ -278,4 +277,32 @@ public class ExtendableMultiPageEditor extends MultiPageEditorPart implements
 		}
 		return null;
 	}
+
+	/** {@inheritDoc} */
+	@Override
+	public EObject getEditedObject() {
+		return editedObject;
+	}
+
+	/** {@inheritDoc} */
+	@SuppressWarnings("rawtypes")
+	@Override
+	public void setHighlight(EObject element, boolean highlighted) {
+		// delegate to active editor
+		IEditorPart part = getActiveEditor();
+		if (part instanceof IModelEditor) {
+			((IModelEditor) part).setHighlight(element, highlighted);
+		}
+	}
+
+	/** {@inheritDoc} */
+	@SuppressWarnings("rawtypes")
+	@Override
+	public void clearAllHighlights() {
+		// delegate to active editor
+		IEditorPart part = getActiveEditor();
+		if (part instanceof IModelEditor) {
+			((IModelEditor) part).clearAllHighlights();
+		}
+	}
 }
diff --git a/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/service/IModelEditorBindingService.java b/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/service/IModelEditorBindingService.java
index 6e53554a78ed54558ec744044f421cbb728f026f..526dbccd89f09bd9cf797c9a8d71ed50ee87453a 100644
--- a/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/service/IModelEditorBindingService.java
+++ b/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/service/IModelEditorBindingService.java
@@ -33,7 +33,7 @@ import org.fortiss.tooling.kernel.ui.internal.ModelEditorBindingService;
  * @author hoelzl
  * @author $Author$
  * @version $Rev$
- * @ConQAT.Rating YELLOW Hash: 8EFBD4397AB482FDAAD1F96749BBEAE0
+ * @ConQAT.Rating YELLOW Hash: 575EDF6DF5A306410AC134948FAF6D8D
  */
 public interface IModelEditorBindingService {
 
@@ -46,7 +46,7 @@ public interface IModelEditorBindingService {
 	/** Closes editors which depend on the given element or a sub-element. */
 	void closeEditors(EObject parentElement);
 
-	/** Returns the currently editor. */
+	/** Returns the currently active editor. */
 	IModelEditor<EObject> getActiveEditor();
 
 	/**