diff --git a/include/whats-in-a-session.html b/include/whats-in-a-session.html
index 123f21dc..87586bb8 100644
--- a/include/whats-in-a-session.html
+++ b/include/whats-in-a-session.html
@@ -34,3 +34,11 @@
   Tracks and Buses, and all the Regions and Plug-Ins they contain.
 </p>
 
+<p>
+  Ardour supports loading session files created with older versions of the
+  program. The oldest known version is 2.8 released in 2009. With very few 
+  exceptions, Ardour will load all session data from such files. The data that 
+  cannot be supported (e.g. the old fade of storing region fades) will be
+  skipped entirely.
+</p>
+