diff -r f5108a598aa7 -r 84b3bf5ee3d2 src/FingersDance.Control.TimeLine/UserControlTimeLine.xaml.cs
--- a/src/FingersDance.Control.TimeLine/UserControlTimeLine.xaml.cs	Tue Oct 06 14:02:09 2009 +0200
+++ b/src/FingersDance.Control.TimeLine/UserControlTimeLine.xaml.cs	Wed Oct 07 17:16:46 2009 +0200
@@ -14,6 +14,7 @@
 
 using FingersDance.Data;
 using FingersDance.ViewModels;
+using FingersDance.Views;
 
 namespace FingersDance.Control.TimeLine
 {
@@ -118,7 +119,10 @@
             CuttingVM = new CuttingViewModel(cut, AnnotWidth);
             tv.DataContext = CuttingVM;
 
-            slider_ContactTapGesture(this,null);
+            UserControlTimeLine_SizeChanged(null, null);
+
+            slider_ContactTapGesture(this, null);
+            
 
         }
 
@@ -182,8 +186,7 @@
                 DragStarted(this, new EventArgs());
         }
 
-        private void sliderPosition_DragCompleted(
-            object sender, DragCompletedEventArgs e)
+        private void sliderPosition_DragCompleted(object sender, DragCompletedEventArgs e)
         {
             finishedDragging = true;
             OnDragCompleted();
@@ -196,10 +199,47 @@
 
         private void slider_ContactTapGesture(object sender, Microsoft.Surface.Presentation.ContactEventArgs e)
         {
-            //addAnnotation();
+            //startOrEndAnnotation();
         }
 
-        public void addAnnotation()
+        public void addAnnotation(AnnotationViewModel avm)
+        {
+            Console.WriteLine("addAnnotation = " + avm.TcBegin + ", " + avm.Dur + ", " + avm.GestureType);
+            Boolean annotOk = true;
+            // We check if the annotation's begin and end timecodes allow a new annotation creation
+            if (CuttingVM != null && AnnotWaiting == false)
+            {
+                foreach (Annotation a in AnnotList)
+                {
+                    //Console.WriteLine("a.TcBegin = " + a.TcBegin + ", avm.TcBegin = " + avm.TcBegin + ", tcOut = " + (a.TcBegin + a.Dur));
+                    // Check begin TC
+                    if (a.TcBegin <= avm.TcBegin && avm.TcBegin <= (a.TcBegin + a.Dur))
+                    {
+                        annotOk = false;
+                    }
+                    // Check end tc and if the new annotation will not cover any other
+                    float endTC = avm.TcBegin + avm.Dur;
+                    //Console.WriteLine("a.TcBegin = " + a.TcBegin + ", tcOut = " + (a.TcBegin + a.Dur) + ", AnnotTcBegin = " + AnnotTcBegin + ", currentTC = " + currentTC);
+                    if (a.TcBegin <= endTC && endTC <= (a.TcBegin + a.Dur) || (avm.TcBegin < a.TcBegin && (a.TcBegin + a.Dur) < endTC))
+                    {
+                        annotOk = false;
+                    }
+                }
+                // If everything's fine, we create the new one
+                if (annotOk == true)
+                {
+                    AnnotList.Add(new Annotation(avm.TcBegin, avm.Dur, avm.GestureType));
+                    CuttingVM.setListFromAnnotations(AnnotList, AnnotWidth);
+                    tv.DataContext = null;
+                    tv.DataContext = CuttingVM;
+                    AnnotWaiting = false;
+                }
+
+            }
+
+        }
+
+        public void startOrEndAnnotation()
         {
             Boolean annotOk = true;
             // We open a new annotation