diff --git a/src/sections/activity-mapping.md b/src/sections/activity-mapping.md
index 3bcd734..f97dde7 100644
--- a/src/sections/activity-mapping.md
+++ b/src/sections/activity-mapping.md
@@ -17,20 +17,23 @@ A [=Solid server=] sending a [PREP] notification as a result of some activity on
           <th> Request Method
           <th> Activity Type
       <tbody>
+        <tr>
+          <td><code> [[RFC9110#POST|POST]] <br> ([[SOLID-PROTOCOL#resource-containment|Containers]])
+          <td><code> [[ACTIVITYSTREAMS-VOCABULARY#dfn-add|as:Add]]
         <tr>
           <td><code> [[RFC9110#PUT|PUT]]
           <td rowspan="3"><code> [[ACTIVITYSTREAMS-VOCABULARY#dfn-update|as:Update]]
         <tr>
           <td><code> [[RFC5789#section-2|PATCH]]
         <tr>
-          <td><code> [[RFC9110#POST|POST]]
+          <td><code> [[RFC9110#POST|POST]] <br> (Not [[SOLID-PROTOCOL#resource-containment|Containers]])
         <tr>
           <td><code> [[RFC9110#DELETE|DELETE]]
           <td><code> [[ACTIVITYSTREAMS-VOCABULARY#dfn-delete|as:Delete]]
     </table>
     <br/>
 
-  2. When the [PREP] notification is triggered by a request on a contained resource with one of the following [[RFC9110#methods|HTTP methods]]:
+  2. When the [PREP] notification is triggered on a container, by a request on a contained resource with one of the following [[RFC9110#methods|HTTP methods]]:
 
     <table class="numbered">
       <caption> Activity Mapping for LDP Containers when contained resources change
@@ -50,7 +53,7 @@ A [=Solid server=] sending a [PREP] notification as a result of some activity on
     </table>
     <br/>
 
-  3. When the [PREP] notification is triggered by a request to create a new resource inside that container (resource) with one of the following [[RFC9110#methods|HTTP methods]]:
+  3. When the [PREP] notification is triggered on a container, by a request to create a new resource inside that container (resource) with one of the following [[RFC9110#methods|HTTP methods]]:
 
     <table class="numbered">
       <caption> Activity Mapping for LDP Containers when contained resources are created