+@heading Conventions for version information in defcustoms
+
+For new customizable variables introduced in Oort Gnus (including the
+v5-10 branch) use @code{:version "22.1" ;; Oort Gnus} including the
+comment.
+@c
+If the variable is new in No Gnus use @code{:version "23.0" ;; No Gnus}.