Meta-HTML was used for pass 2 by WML 1.x whereas newer version use mp4h. This
include file provides backward compatibility defines for Meta-HTML tags which
no longer exist in mp4h.
Meta-HTML tag mp4h equivalent tag
----------------- -------------------
define-container define-tag
defsubst define-tag
defmacro define-tag
prog group
concat group
%%eval group
sub substract
mul multiply
mod modulo
