diff --git a/draft-ymbk-grow-bgp-collector-communities.xml b/draft-ymbk-grow-bgp-collector-communities.xml
index 32de9a5..f21f8a9 100644
--- a/draft-ymbk-grow-bgp-collector-communities.xml
+++ b/draft-ymbk-grow-bgp-collector-communities.xml
@@ -94,6 +94,11 @@
     two much simpler marking schemes and, if published, will obsolete
     <xref target="RFC4384"/>.</t>
 
+    <t>This document describes 'in-band' signaling, i.e. what a user of
+    the raw BGP data from a collector can see.  The collector operation
+    is assumed to collect a lot more meta-data about the participants,
+    e.g.: contact details, location if remote, etc.</t>
+
     </section>
 
   <section anchor="rationale" title="Rationale">