diff --git a/Doc/DbDevel/dbDevel.xml b/Doc/DbDevel/dbDevel.xml
index 0bc45afae1a1f24a5e49d3060bf081fc4ed82f9d..b6852345d03bbbb3a74ffd51e87462671cf20bc4 100644
--- a/Doc/DbDevel/dbDevel.xml
+++ b/Doc/DbDevel/dbDevel.xml
@@ -1633,7 +1633,45 @@ WriteResult({ "nInserted" : 1 })
           <figure xml:id="fig_dbDevel_overview_mongo_features_CRUD_deleteAttribute">
             <title>Deleting an attribute</title>
 
-            <programlisting language="json"/>
+            <informaltable border="1">
+              <tr>
+                <th>Code</th>
+
+                <th>Result</th>
+              </tr>
+
+              <tr>
+                <td valign="top"><programlisting language="json">db.group.update(
+    {_id: ObjectId("5fa3035932b87a0c60a6ed1a")},
+
+    { $unset:
+            {
+                gidNumber: 42 <co
+                      linkends="fig_dbDevel_overview_mongo_features_CRUD_deleteAttribute-1"
+                      xml:id="fig_dbDevel_overview_mongo_features_CRUD_deleteAttribute-1-co"/>
+            }
+    }
+)</programlisting></td>
+
+                <td valign="top"><screen>db.group.find()
+
+[
+  {
+    "_id": {"$oid": "5fa3035932b87a0c60a6ed1a"},
+    "cname": "My users",
+    "gid": "users"
+  }
+]</screen></td>
+              </tr>
+            </informaltable>
+
+            <calloutlist role="slideExclude">
+              <callout arearefs="fig_dbDevel_overview_mongo_features_CRUD_deleteAttribute-1-co"
+                       xml:id="fig_dbDevel_overview_mongo_features_CRUD_deleteAttribute-1">
+                <para>Though the attribute is to be deleted the operation
+                requires a dummy value for syntactical reasons.</para>
+              </callout>
+            </calloutlist>
           </figure>
         </section>