diff --git a/OB3.mediawiki b/OB3.mediawiki
index 6d52117..8eaa86d 100644
--- a/OB3.mediawiki
+++ b/OB3.mediawiki
@@ -1,7 +1,7 @@
 [[Category RSC]]
 Work in progress.
 
-This page refers to .ob3, a custom format for 3D models created by Jagex. It is used by the RuneScape Classic engine since client version #74.
+This page refers to .ob3, a custom format for 3D models created by Jagex. It is used by the RuneScape Classic engine since client version #74. For the earlier version of the format see [[OB2|OB2]].
 
 <pre>package jagex.client;