>This rewriting can be done either at the HTML layer (using "&" entity
>references or numeric character references as defined in [HTML2] section
>3.2.1) or at the MIME layer (using Content-Transfer-Encoding as defined in
>[MIME1] section 5).
Jacob, the reference to numeric characer references, or character
entities is meaningless. Do you realise what this actuall means in
terms of requirements of user agents?
The MIME mechanisms (content transfer encodings) suffice. Let's leave
it at that.