diff --git a/main/introduction.bs b/main/introduction.bs
index ca75b48e..cd3299ec 100644
--- a/main/introduction.bs
+++ b/main/introduction.bs
@@ -21,3 +21,13 @@ that reads or writes data from one or more [=data pods=].
 Issue: Introduce the structure of this document.
   [Cross-server interoperability](#resource-access)
   [Cross-app interoperability](#clients)
+
+## Namespaces ## {#namespaces}
+<table>
+<tbody>
+<tr><th>Prefix</th><th>Namespace</th><th>Description</th></tr>
+<tr><td>rdf</td><td>http://www.w3.org/1999/02/22-rdf-syntax-ns#</td><td>[[!rdf-schema]]</td></tr>
+<tr><td>ldp</td><td>http://www.w3.org/ns/ldp#</td><td>[[!LDP]]</td></tr>
+<tr><td>solid</td><td>http://www.w3.org/ns/solid/terms#</td><td>Solid Terms</td></tr>
+</tbody>
+</table>