-Its default value is \"XEmacs: %17b\" (NOT!). Major modes that edit things
-other than ordinary files may change this (e.g. Info, Dired,...)")
+Its default value is
+
+ (list (cons modeline-buffer-id-left-extent (purecopy \"XEmacs%N:\"))
+ (cons modeline-buffer-id-right-extent (purecopy \" %17b\")))
+
+Major modes that edit things other than ordinary files may change this
+(e.g. Info, Dired,...).")