diff --git a/samples/RenderTest/Pages/AnimationsPage.xaml b/samples/RenderTest/Pages/AnimationsPage.xaml
index 21ecc3f0bb..f2452df03b 100644
--- a/samples/RenderTest/Pages/AnimationsPage.xaml
+++ b/samples/RenderTest/Pages/AnimationsPage.xaml
@@ -1,11 +1,16 @@
 <UserControl xmlns="https://github.com/avaloniaui">
   <UserControl.Styles>
         <Styles>
-        <Style Selector="Rectangle.Test">
-          <Setter Property="Margin" Value="15"/>
-          <Setter Property="Width" Value="100"/>
-          <Setter Property="Height" Value="100"/>
-        </Style>
+          <Style Selector="Rectangle.Test">
+            <Setter Property="Margin" Value="15"/>
+            <Setter Property="Width" Value="100"/>
+            <Setter Property="Height" Value="100"/>
+          </Style>
+          <Style Selector="Border.Test">
+            <Setter Property="Margin" Value="15"/>
+            <Setter Property="Width" Value="100"/>
+            <Setter Property="Height" Value="100"/>
+          </Style>
         <Style Selector="Rectangle.Rect1:pointerover">
           <Style.Animations>
             <Animation Duration="0:0:2.5" Easing="BounceEaseInOut">
@@ -41,7 +46,7 @@
             </Animation>
           </Style.Animations>
         </Style>
-        <Style Selector="Rectangle.Rect4:pointerover">
+        <Style Selector="Border.Rect4:pointerover">
           <Style.Animations>
             <Animation Duration="0:0:3" Easing="CircularEaseInOut">
               <TransformKeyFrames Property="SkewTransform.AngleX">
@@ -79,11 +84,12 @@
             <TranslateTransform/>
           </Rectangle.RenderTransform>
         </Rectangle>
-        <Rectangle Classes="Test Rect4" Fill="SeaGreen">
-          <Rectangle.RenderTransform>
+        <Border Classes="Test Rect4" Background="SeaGreen">
+          <Border.RenderTransform>
             <SkewTransform/>
-          </Rectangle.RenderTransform>
-        </Rectangle>
+          </Border.RenderTransform>
+            <Path Fill="White" Stretch="Uniform" Data="F1 M 16.6309,18.6563C 17.1309,8.15625 29.8809,14.1563 29.8809,14.1563C 30.8809,11.1563 34.1308,11.4063 34.1308,11.4063C 33.5,12 34.6309,13.1563 34.6309,13.1563C 32.1309,13.1562 31.1309,14.9062 31.1309,14.9062C 41.1309,23.9062 32.6309,27.9063 32.6309,27.9062C 24.6309,24.9063 21.1309,22.1562 16.6309,18.6563 Z M 16.6309,19.9063C 21.6309,24.1563 25.1309,26.1562 31.6309,28.6562C 31.6309,28.6562 26.3809,39.1562 18.3809,36.1563C 18.3809,36.1563 18,38 16.3809,36.9063C 15,36 16.3809,34.9063 16.3809,34.9063C 16.3809,34.9063 10.1309,30.9062 16.6309,19.9063 Z"/>          
+         </Border>
       </StackPanel>
 
     </StackPanel>
diff --git a/samples/RenderTest/Pages/AnimationsPage.xaml.cs b/samples/RenderTest/Pages/AnimationsPage.xaml.cs
index 925ba9260c..64def8d914 100644
--- a/samples/RenderTest/Pages/AnimationsPage.xaml.cs
+++ b/samples/RenderTest/Pages/AnimationsPage.xaml.cs
@@ -14,77 +14,12 @@ namespace RenderTest.Pages
     {
         public AnimationsPage()
         {
-            this.InitializeComponent();
-           // this.CreateAnimations();
+            InitializeComponent();
         }
 
         private void InitializeComponent()
         {
             AvaloniaXamlLoader.Load(this);
         }
-
-        private void CreateAnimations()
-        {
-            const int Count = 100;
-            var panel = new WrapPanel();
-
-            for (var i = 0; i < Count; ++i)
-            {
-                Ellipse ellipse;
-                var element = new Panel
-                {
-                    Children =
-                    {
-                        (ellipse = new Ellipse
-                        {
-                            Name = $"ellipse{i}",
-                            Width = 100,
-                            Height = 100,
-                            Fill = Brushes.Blue,
-                        }),
-                        new Path
-                        {
-                            Data = StreamGeometry.Parse(
-                                "F1 M 16.6309,18.6563C 17.1309,8.15625 29.8809,14.1563 29.8809,14.1563C 30.8809,11.1563 34.1308,11.4063 34.1308,11.4063C 33.5,12 34.6309,13.1563 34.6309,13.1563C 32.1309,13.1562 31.1309,14.9062 31.1309,14.9062C 41.1309,23.9062 32.6309,27.9063 32.6309,27.9062C 24.6309,24.9063 21.1309,22.1562 16.6309,18.6563 Z M 16.6309,19.9063C 21.6309,24.1563 25.1309,26.1562 31.6309,28.6562C 31.6309,28.6562 26.3809,39.1562 18.3809,36.1563C 18.3809,36.1563 18,38 16.3809,36.9063C 15,36 16.3809,34.9063 16.3809,34.9063C 16.3809,34.9063 10.1309,30.9062 16.6309,19.9063 Z"),
-                            Fill = Brushes.Green,
-                            HorizontalAlignment = Avalonia.Layout.HorizontalAlignment.Center,
-                            VerticalAlignment = Avalonia.Layout.VerticalAlignment.Center,
-                            RenderTransform = new ScaleTransform(2, 2),
-                        }
-                    },
-                    Margin = new Thickness(4),
-                    RenderTransform = new ScaleTransform(),
-                };
-
-                //var start = Animate.Stopwatch.Elapsed;
-                //var index = i % (Count / 2);
-                //var degrees = Animate.Timer
-                //    .Select(x => (x - start).TotalSeconds)
-                //    .Where(x => (x % Count) >= index && (x % Count) < index + 1)
-                //    .Select(x => (x % 1) / 1);
-
-                //element.RenderTransform.Bind(
-                //    ScaleTransform.ScaleXProperty,
-                //    degrees,
-                //    BindingPriority.Animation);
-
-                ellipse.PointerEnter += Ellipse_PointerEnter;
-                ellipse.PointerLeave += Ellipse_PointerLeave;
-
-                panel.Children.Add(element);
-            }
-
-            Content = panel;
-        }
-
-        private void Ellipse_PointerEnter(object sender, PointerEventArgs e)
-        {
-            ((Ellipse)sender).Fill = Brushes.Red;
-        }
-
-        private void Ellipse_PointerLeave(object sender, PointerEventArgs e)
-        {
-            ((Ellipse)sender).Fill = Brushes.Blue;
-        }
     }
 }
diff --git a/src/Avalonia.Animation/Animatable.cs b/src/Avalonia.Animation/Animatable.cs
index c4ee1d72e5..d8ec4f76b2 100644
--- a/src/Avalonia.Animation/Animatable.cs
+++ b/src/Avalonia.Animation/Animatable.cs
@@ -16,7 +16,7 @@ namespace Avalonia.Animation
     public class Animatable : AvaloniaObject
     {
         /// <summary>
-        /// 
+        /// Defines the <see cref="Transitions"/> property.
         /// </summary>
         public static readonly StyledProperty<Transitions.Transitions> TransitionsProperty =
                 AvaloniaProperty.Register<Animatable, Transitions.Transitions>(nameof(Transitions));
diff --git a/src/Avalonia.Animation/Keyframes/KeyFrame.cs b/src/Avalonia.Animation/Keyframes/KeyFrame.cs
index 982997c5e3..e4a8e59ab1 100644
--- a/src/Avalonia.Animation/Keyframes/KeyFrame.cs
+++ b/src/Avalonia.Animation/Keyframes/KeyFrame.cs
@@ -25,7 +25,6 @@ namespace Avalonia.Animation.Keyframes
         {
             get
             {
-
                 return _ktimeSpan;
             }
             set
@@ -47,7 +46,6 @@ namespace Avalonia.Animation.Keyframes
         {
             get
             {
-
                 return _kCue;
             }
             set
@@ -61,18 +59,11 @@ namespace Avalonia.Animation.Keyframes
             }
         }
 
-
+        /// <summary>
+        /// The keyframe's target value.
+        /// </summary>
         public object Value { get; set; }
 
-        
-        ///// <summary>
-        ///// Initializes a new instance of the <see cref="KeyFrame"/> class.
-        ///// </summary>
-        //public KeyFrame()
-        //{
-
-        //}
-
     }
 
 
diff --git a/src/Avalonia.Animation/Keyframes/KeyFrames.cs b/src/Avalonia.Animation/Keyframes/KeyFrames.cs
index 6a580f3b96..c332231e46 100644
--- a/src/Avalonia.Animation/Keyframes/KeyFrames.cs
+++ b/src/Avalonia.Animation/Keyframes/KeyFrames.cs
@@ -11,7 +11,7 @@ using Avalonia.Data;
 namespace Avalonia.Animation.Keyframes
 {
     /// <summary>
-    /// Base class for KeyFrames 
+    /// Base class for KeyFrames objects
     /// </summary>
     public abstract class KeyFrames<T> : AvaloniaList<KeyFrame>, IKeyFrames
     {
@@ -27,7 +27,7 @@ namespace Avalonia.Animation.Keyframes
         public Dictionary<double, T> ConvertedKeyframes = new Dictionary<double, T>();
 
         private bool IsVerfifiedAndConverted;
-        
+
         /// <inheritdoc/>
         public virtual IDisposable Apply(Animation animation, Animatable control, IObservable<bool> obsMatch)
         {
@@ -44,11 +44,41 @@ namespace Avalonia.Animation.Keyframes
                 });
         }
 
+        /// <summary>
+        /// Represents a pair of keyframe, usually the
+        /// Start and End keyframes of a <see cref="KeyFrames{T}"/> object.
+        /// </summary>
+        public struct KeyFramePair
+        { 
+
+            /// <summary>
+            /// Initializes this <see cref="KeyFramePair"/>
+            /// </summary>
+            /// <param name="FirstKeyFrame"></param>
+            /// <param name="LastKeyFrame"></param>
+            public KeyFramePair(KeyValuePair<double, T> FirstKeyFrame, KeyValuePair<double, T> LastKeyFrame) : this()
+            {
+                this.FirstKeyFrame = FirstKeyFrame;
+                this.SecondKeyFrame = LastKeyFrame;
+            }
+
+            /// <summary>
+            /// First <see cref="KeyFrame"/> object.
+            /// </summary>
+            public KeyValuePair<double, T> FirstKeyFrame { get; private set; }
+
+            /// <summary>
+            /// Second <see cref="KeyFrame"/> object.
+            /// </summary>
+            public KeyValuePair<double, T> SecondKeyFrame { get; private set; }
+
+        }
+
         /// <summary>
         /// Get the nearest pair of cue-time ordered keyframes 
         /// according to the given time parameter.  
         /// </summary>
-        public (KeyValuePair<double, T> firstKF, KeyValuePair<double, T> lastKF) GetKeyFramePairByTime(double t)
+        public KeyFramePair GetKeyFramePairByTime(double t)
         {
             KeyValuePair<double, T> firstCue, lastCue;
             int kvCount = ConvertedKeyframes.Count();
@@ -75,7 +105,7 @@ namespace Avalonia.Animation.Keyframes
                 firstCue = ConvertedKeyframes.First();
                 lastCue = ConvertedKeyframes.Last();
             }
-            return (firstCue, lastCue);
+            return new KeyFramePair(firstCue, lastCue);
         }
 
 
@@ -83,7 +113,7 @@ namespace Avalonia.Animation.Keyframes
         /// Returns an observable timer with the specific Animation
         /// duration and delay and applies the Animation's easing function.
         /// </summary>
-        public IObservable<double> GetKeyFramesTimer(Animation animation) => 
+        public IObservable<double> GetKeyFramesTimer(Animation animation) =>
                         Timing.GetTimer(animation.Duration, animation.Delay)
                               .Select(t => animation.Easing.Ease(t));
 
@@ -149,7 +179,7 @@ namespace Avalonia.Animation.Keyframes
                     hasEndKey = true;
                 }
             }
-            
+
             if (!hasStartKey && !hasEndKey)
                 throw new InvalidOperationException
                     ($"{this.GetType().Name} must have a starting (0% cue) and ending (100% cue) keyframe.");