diff --git a/org.fortiss.tooling.graphicsGL.ui/trunk/src/org/fortiss/tooling/graphicsGL/ui/util/.ratings b/org.fortiss.tooling.graphicsGL.ui/trunk/src/org/fortiss/tooling/graphicsGL/ui/util/.ratings
index 2877e97ed2f55bcc85613daf1867fd5b5a4b772c..63e3c94afdf2ed605cedd61fad699d7625fa5caa 100644
--- a/org.fortiss.tooling.graphicsGL.ui/trunk/src/org/fortiss/tooling/graphicsGL/ui/util/.ratings
+++ b/org.fortiss.tooling.graphicsGL.ui/trunk/src/org/fortiss/tooling/graphicsGL/ui/util/.ratings
@@ -1,6 +1,6 @@
 .ratings 7beea2262dcfbfd1bd3a9a4bed767a3146157889 GREEN
 ColorUtil.java 0eced71852172ba1bb4b3ab9c2a0371665ac209b GREEN
 FloatBufferUtils.java c1b35aa2e32d25d12780d7b552333cfb7d84c4d8 GREEN
-GLPrimitives.java 49d10b15b9489f01cb4c7656fce01331e6b41ebd GREEN
-Graph3DUtil.java 8176896a789684c7623a6793fb0b91622decd2af GREEN
+GLPrimitives.java b5d93a42e4e31c77d24c7e1bcd712dd44ec0ba95 RED
+Graph3DUtil.java 98c5fbfb65ef4322e0d5bc73654168cb9b57deb2 RED
 package.html 88a994ffc5b937b445fa44d6fe6e6ed48fffdd15 GREEN
diff --git a/org.fortiss.tooling.graphicsGL.ui/trunk/src/org/fortiss/tooling/graphicsGL/ui/util/GLPrimitives.java b/org.fortiss.tooling.graphicsGL.ui/trunk/src/org/fortiss/tooling/graphicsGL/ui/util/GLPrimitives.java
index ccff5b352d9b8979a215546b43ceedcb57d839cc..982fbca9cc569a6c9f8d6ca653794d6c29308005 100644
--- a/org.fortiss.tooling.graphicsGL.ui/trunk/src/org/fortiss/tooling/graphicsGL/ui/util/GLPrimitives.java
+++ b/org.fortiss.tooling.graphicsGL.ui/trunk/src/org/fortiss/tooling/graphicsGL/ui/util/GLPrimitives.java
@@ -135,6 +135,7 @@ public class GLPrimitives {
 	/** Initializes basic GL properties for 3D rendering. */
 	public static void initializeGLfor3D(int width, int height, float fieldOfViewAngle,
 			float aspect, float nearDistance, float farDistance) {
+		// TODO (SB, 13): Introduce constants, or add a short comment about what this section does.
 		glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
 		glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 		glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
@@ -178,6 +179,7 @@ public class GLPrimitives {
 	 * object picker. This method returns the hits counted during picking render run. The results of
 	 * the picking run are stored.
 	 */
+	// TODO(SB, 13,14): get(0), get(1), ...
 	public static int startPickingModeAndCountHits(int x, int y, Vector3f perspective,
 			IntBuffer viewport, ViewObjectBase scene, ModelObjectPicker picker,
 			IntBuffer selectBuffer, Camera c) {
@@ -214,6 +216,7 @@ public class GLPrimitives {
 	}
 
 	/** Returns the current transformed origin in model view coordinates. */
+	// TODO(SB, 13,14): get(0), get(1), ...
 	public static Vector3f getTransformedOrigin() {
 		FloatBuffer fb = createFloatBuffer(16);
 		glGetFloatv(GL_MODELVIEW_MATRIX, fb);
@@ -221,6 +224,7 @@ public class GLPrimitives {
 	}
 
 	/** Returns the given vector in model view coordinates. */
+	// TODO(SB, 13,14): get(0), get(1), ...
 	public static Vector3f getTransformedVector(Vector3D v) {
 		FloatBuffer fb = createFloatBuffer(16);
 		glGetFloatv(GL_MODELVIEW_MATRIX, fb);
@@ -369,6 +373,7 @@ public class GLPrimitives {
 	/** Sets the current material data for GL_FRONT faces. */
 	public static void setMaterial(FloatBuffer ambient, FloatBuffer diffuse, FloatBuffer specular,
 			float specularCoeff) {
+		// TODO (SB, 1)
 		// glDisable(GL_COLOR_MATERIAL);
 		// glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 		glMaterialfv(GL_FRONT, GL_AMBIENT, ambient);
@@ -422,7 +427,7 @@ public class GLPrimitives {
 	/** Creates a transformation matrix for billboards. Result is stored in bbmat */
 	public static void createBillboardMatrix(float[] bbmat, Vector3f right, Vector3f up,
 			Vector3f look, Vector3f pos) {
-
+		// TODO(SB, 13): Add pointer to documentation?
 		bbmat[0] = right.x;
 		bbmat[1] = right.y;
 		bbmat[2] = right.z;
@@ -446,7 +451,7 @@ public class GLPrimitives {
 	/** Creates a transformation matrix for billboards. Result is stored in bbmat */
 	public static void createBillboardMatrix2(float[] bbmat, Vector3f right, Vector3f up,
 			Vector3f look, Vector3f pos) {
-
+		// TODO(SB, 13): Add pointer to documentation?
 		bbmat[0] = right.x;
 		bbmat[1] = right.y;
 		bbmat[2] = right.z;
diff --git a/org.fortiss.tooling.graphicsGL.ui/trunk/src/org/fortiss/tooling/graphicsGL/ui/util/Graph3DUtil.java b/org.fortiss.tooling.graphicsGL.ui/trunk/src/org/fortiss/tooling/graphicsGL/ui/util/Graph3DUtil.java
index efda8f54b989b6cc6705f9820c6175732b046be2..2a0c430c15c61371caa6d17a652a0ffeede0791e 100644
--- a/org.fortiss.tooling.graphicsGL.ui/trunk/src/org/fortiss/tooling/graphicsGL/ui/util/Graph3DUtil.java
+++ b/org.fortiss.tooling.graphicsGL.ui/trunk/src/org/fortiss/tooling/graphicsGL/ui/util/Graph3DUtil.java
@@ -136,6 +136,7 @@ public class Graph3DUtil {
 			List<String> objData = getStringContentFromResource(PLUGIN_ID, modelPath + ".obj");
 			List<String> mtlData = getStringContentFromResource(PLUGIN_ID, modelPath + ".mtl");
 
+			// TODO (SB, 14)
 			return new OBJLoaderUtil(objData, mtlData).getLoadedObjects().get(0);
 		} catch(Exception ex) {
 			error(getDefault(), ex.getMessage(), ex);