Re: 2.3: Link Recognition by PI or other signal?

> 2.3 Should we provide a PI or other signaling mechanism whereby a document
>     can specify that particular elements ought to be processed as link
>     elements?

This should be deferred until yuou've decided what mechanisms are available --
it's the same as the idea of having a summary of mechanisms, which was also

It's useful to be able to do this, though.