diff --git a/README.adoc b/README.adoc
index 43efe824e2532eaad9b38931ed16db1395eb0043..f325781e4fca287803df5aed90cc0bfaf3e41088 100644
--- a/README.adoc
+++ b/README.adoc
@@ -1 +1,7 @@
+// Referencing the true README inside the modules.
+// This README on the front page just includes it.
+
+:imagesdir: doc/images
+
 include::doc/main.adoc[]
+
diff --git a/doc/main.adoc b/doc/main.adoc
index ea4ee1418a2c2fd625a6f9233432cfe0b0c368ff..4c81664ed2e02c092d7d4e1363cda8567a250d06 100644
--- a/doc/main.adoc
+++ b/doc/main.adoc
@@ -74,6 +74,10 @@ It is configured with MAC addresses, Frame length and receive a timestamp when t
 Coordinate the interconnexion, pass/dump.
 It detects erroneous situation (too many/few data words).
 
+* *Latching sequence number*
+This feature was added to compute alignement of the frame sequence number.
+Usefull for a park of two kinds of electronics, which cannot be fa seq aligned.
+
 .Basic overview of CCN packeter
 image::images/packeter_overview.svg[]