Heiko Oberdiek wrote:
> In theory. In practice, you can or sometimes even must have some stuff
> before \documentclass/\documenttype.
> Example:
> \RequirePackage{cmap}% before the class loads fonts
> \documentclass{myclass}
> 
> Yours sincerely
>   Heiko <[log in to unmask]>
> 

I thought about that, but I was trying to keep things simple-ish. Some
cases like this might be covered, but there will always be problems with
a major change.
-- 
Joseph Wright