diff --git a/xml/System.Runtime.Versioning/RequiresPreviewFeaturesAttribute.xml b/xml/System.Runtime.Versioning/RequiresPreviewFeaturesAttribute.xml
index 1aea749e11e..e0df9897931 100644
--- a/xml/System.Runtime.Versioning/RequiresPreviewFeaturesAttribute.xml
+++ b/xml/System.Runtime.Versioning/RequiresPreviewFeaturesAttribute.xml
@@ -20,8 +20,9 @@
     </Attribute>
   </Attributes>
   <Docs>
-    <summary>To be added.</summary>
+    <summary>Indicates that an API is in preview. This attribute allows call sites to be flagged with a diagnostic that indicates that a preview feature is used. Authors can use this attribute to ship preview features in their assemblies.</summary>
     <remarks>To be added.</remarks>
+    <related type="Article" href="https://aka.ms/dotnet-warnings/preview-features">Preview Features</related>
   </Docs>
   <Members>
     <Member MemberName=".ctor">
@@ -57,8 +58,8 @@
         <Parameter Name="message" Type="System.String" />
       </Parameters>
       <Docs>
-        <param name="message">To be added.</param>
-        <summary>To be added.</summary>
+        <param name="message">An optional message associated with this attribute instance.</param>
+        <summary>Initializes a new instance of the <see cref="T:System.Runtime.Versioning.RequiresPreviewFeaturesAttribute" /> class with the specified message.</summary>
         <remarks>To be added.</remarks>
       </Docs>
     </Member>
@@ -78,7 +79,7 @@
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
       <Docs>
-        <summary>To be added.</summary>
+        <summary>Gets the optional message associated with this attribute instance.</summary>
         <value>To be added.</value>
         <remarks>To be added.</remarks>
       </Docs>
@@ -99,7 +100,7 @@
         <ReturnType>System.String</ReturnType>
       </ReturnValue>
       <Docs>
-        <summary>To be added.</summary>
+        <summary>Gets or sets the optional URL associated with this attribute instance.</summary>
         <value>To be added.</value>
         <remarks>To be added.</remarks>
       </Docs>