diff --git a/xml/System.Reflection/ManifestResourceAttributes.xml b/xml/System.Reflection/ManifestResourceAttributes.xml
index bd87831bab2..a35feea1e7e 100644
--- a/xml/System.Reflection/ManifestResourceAttributes.xml
+++ b/xml/System.Reflection/ManifestResourceAttributes.xml
@@ -49,7 +49,7 @@
       </ReturnValue>
       <MemberValue>2</MemberValue>
       <Docs>
-        <summary>To be added.</summary>
+        <summary>The resource is not exported from the assembly.</summary>
       </Docs>
     </Member>
     <Member MemberName="Public">
@@ -74,7 +74,7 @@
       </ReturnValue>
       <MemberValue>1</MemberValue>
       <Docs>
-        <summary>To be added.</summary>
+        <summary>The resource is exported from the assembly.</summary>
       </Docs>
     </Member>
     <Member MemberName="VisibilityMask">
@@ -99,7 +99,7 @@
       </ReturnValue>
       <MemberValue>7</MemberValue>
       <Docs>
-        <summary>To be added.</summary>
+        <summary>Masks just the visibility-related attributes.</summary>
       </Docs>
     </Member>
   </Members>
diff --git a/xml/System.Reflection/MethodSemanticsAttributes.xml b/xml/System.Reflection/MethodSemanticsAttributes.xml
index 485400b89bd..3f1a884c972 100644
--- a/xml/System.Reflection/MethodSemanticsAttributes.xml
+++ b/xml/System.Reflection/MethodSemanticsAttributes.xml
@@ -47,7 +47,7 @@
       </ReturnValue>
       <MemberValue>8</MemberValue>
       <Docs>
-        <summary>To be added.</summary>
+        <summary><para>Used to add a handler for an event. Corresponds to the <see langword="AddOn" /> flag in the Ecma 335 CLI specification.</para><para>CLS-compliant adders are named the with <see langword="add_" /> prefix.</para></summary>
       </Docs>
     </Member>
     <Member MemberName="Getter">
@@ -71,7 +71,7 @@
       </ReturnValue>
       <MemberValue>2</MemberValue>
       <Docs>
-        <summary>To be added.</summary>
+        <summary><para>Reads the value of the property.</para><para>CLS-compliant getters are named with `get_` prefix.</para></summary>
       </Docs>
     </Member>
     <Member MemberName="Other">
@@ -95,7 +95,7 @@
       </ReturnValue>
       <MemberValue>4</MemberValue>
       <Docs>
-        <summary>To be added.</summary>
+        <summary>Other method for a property (not a getter or setter) or an event (not an adder, remover, or raiser).</summary>
       </Docs>
     </Member>
     <Member MemberName="Raiser">
@@ -119,7 +119,7 @@
       </ReturnValue>
       <MemberValue>32</MemberValue>
       <Docs>
-        <summary>To be added.</summary>
+        <summary><para>Used to indicate that an event has occurred. Corresponds to the <see langword="Fire" /> flag in the Ecma 335 CLI specification.</para><para> CLS-compliant raisers are named with the <see langword="raise_" /> prefix.</para></summary>
       </Docs>
     </Member>
     <Member MemberName="Remover">
@@ -143,7 +143,7 @@
       </ReturnValue>
       <MemberValue>16</MemberValue>
       <Docs>
-        <summary>To be added.</summary>
+        <summary><para>Used to remove a handler for an event. Corresponds to the <see langword="RemoveOn" /> flag in the Ecma 335 CLI specification.</para><para>CLS-compliant removers are named with the <see langword="remove_" /> prefix.</para></summary>
       </Docs>
     </Member>
     <Member MemberName="Setter">
@@ -167,7 +167,7 @@
       </ReturnValue>
       <MemberValue>1</MemberValue>
       <Docs>
-        <summary>To be added.</summary>
+        <summary><para>Used to modify the value of the property.</para><para>CLS-compliant setters are named with the <see langword="set_" /> prefix.</para></summary>
       </Docs>
     </Member>
   </Members>