diff --git a/xml/System.Windows.Media.Animation/IAnimation.xml b/xml/System.Windows.Media.Animation/IAnimation.xml
index 68e5dc8d0a8..3567ded27bd 100644
--- a/xml/System.Windows.Media.Animation/IAnimation.xml
+++ b/xml/System.Windows.Media.Animation/IAnimation.xml
@@ -11,7 +11,7 @@
   </AssemblyInfo>
   <Interfaces />
   <Docs>
-    <summary>To be added.</summary>
+    <summary>Provides support for animating a property value.</summary>
     <remarks>To be added.</remarks>
   </Docs>
   <Members>
@@ -35,13 +35,15 @@
         <Parameter Name="animationClock" Type="System.Windows.Media.Animation.AnimationClock" />
       </Parameters>
       <Docs>
-        <param name="defaultOriginValue">To be added.</param>
-        <param name="defaultDestinationValue">To be added.</param>
-        <param name="animationClock">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
+        <param name="defaultOriginValue">The suggested origin value to provide the animation, which is used if the animation does not have its own concept of a start value. If this animation is the first in a composition chain, it is the snapshot value, if one is available, or the base property value, if it is not; otherwise, it is the value returned by the previous animation in the chain with an animation clock that is not <see cref="F:System.Windows.Media.Animation.ClockState.Stopped" />.</param>
+        <param name="defaultDestinationValue">The suggested destination value to provide the animation, which is used if the animation does not have its own concept of an end value. It is the base value if the animation is in the first composition layer of animations on a property; otherwise, it is the output value from the previous composition layer of animations for the property.</param>
+        <param name="animationClock">The animation clock that can generate the <see cref="P:System.Windows.Media.Animation.Clock.CurrentTime" /> or <see cref="P:System.Windows.Media.Animation.Clock.CurrentProgress" /> value to be used by the animation to generate its output value.</param>
+        <summary>Calculates the value this animation believes should be the current value for the property.</summary>
+        <returns>The value this animation believes should be the current value for the property.</returns>
         <remarks>To be added.</remarks>
       </Docs>
     </Member>
   </Members>
 </Type>
+
+
diff --git a/xml/System.Windows.Media/PenDashCap.xml b/xml/System.Windows.Media/PenDashCap.xml
index bb4486534d1..07d01f741a6 100644
--- a/xml/System.Windows.Media/PenDashCap.xml
+++ b/xml/System.Windows.Media/PenDashCap.xml
@@ -13,7 +13,7 @@
     <BaseTypeName>System.Enum</BaseTypeName>
   </Base>
   <Docs>
-    <summary>To be added.</summary>
+    <summary>Describes the shape at the end of each dash segment.</summary>
     <remarks>To be added.</remarks>
   </Docs>
   <Members>
@@ -34,7 +34,7 @@
       </ReturnValue>
       <MemberValue>0</MemberValue>
       <Docs>
-        <summary>To be added.</summary>
+        <summary>A cap that does not extend past the last point of the line. It is comparable to no line cap.</summary>
       </Docs>
     </Member>
     <Member MemberName="Round">
@@ -54,7 +54,7 @@
       </ReturnValue>
       <MemberValue>2</MemberValue>
       <Docs>
-        <summary>To be added.</summary>
+        <summary>A semicircle that has a diameter equal to the line thickness.</summary>
       </Docs>
     </Member>
     <Member MemberName="Triangle">
@@ -74,8 +74,9 @@
       </ReturnValue>
       <MemberValue>3</MemberValue>
       <Docs>
-        <summary>To be added.</summary>
+        <summary>An isosceles right triangle whose base length is equal to the thickness of the line.</summary>
       </Docs>
     </Member>
   </Members>
 </Type>
+