diff --git a/xml/System.Buffers/ReadOnlySpanAction`2.xml b/xml/System.Buffers/ReadOnlySpanAction`2.xml
index 5bc6b418e8e..9caf61e4422 100644
--- a/xml/System.Buffers/ReadOnlySpanAction`2.xml
+++ b/xml/System.Buffers/ReadOnlySpanAction`2.xml
@@ -32,11 +32,11 @@
     <ReturnType>System.Void</ReturnType>
   </ReturnValue>
   <Docs>
-    <typeparam name="T">To be added.</typeparam>
-    <typeparam name="TArg">To be added.</typeparam>
-    <param name="span">To be added.</param>
-    <param name="arg">To be added.</param>
-    <summary>To be added.</summary>
+    <typeparam name="T">The type of the objects in the read-only span.</typeparam>
+    <typeparam name="TArg">The type of the object that represents the state.</typeparam>
+    <param name="span">A read-only span of objects of type <typeparamref name="T" />.</param>
+    <param name="arg">A state object of type <typeparamref name="TArg" />.</param>
+    <summary>Encapsulates a method that receives a read-only span of objects of type <typeparamref name="T" /> and a state object of type <typeparamref name="TArg" />.</summary>
     <remarks>To be added.</remarks>
   </Docs>
 </Type>
diff --git a/xml/System.Buffers/SpanAction`2.xml b/xml/System.Buffers/SpanAction`2.xml
index 3ee1ce2dad4..ac62aa7f511 100644
--- a/xml/System.Buffers/SpanAction`2.xml
+++ b/xml/System.Buffers/SpanAction`2.xml
@@ -32,11 +32,11 @@
     <ReturnType>System.Void</ReturnType>
   </ReturnValue>
   <Docs>
-    <typeparam name="T">To be added.</typeparam>
-    <typeparam name="TArg">To be added.</typeparam>
-    <param name="span">To be added.</param>
-    <param name="arg">To be added.</param>
-    <summary>To be added.</summary>
+    <typeparam name="T">The type of the objects in the span.</typeparam>
+    <typeparam name="TArg">The type of the object that represents the state.</typeparam>
+    <param name="span">A span of objects of type <typeparamref name="T" />.</param>
+    <param name="arg">A state object of type <typeparamref name="TArg" />.</param>
+    <summary>Encapsulates a method that receives a span of objects of type <typeparamref name="T" /> and a state object of type <typeparamref name="TArg" />.</summary>
     <remarks>To be added.</remarks>
   </Docs>
 </Type>