>But, of course, piggy-backing PIs onto elements using
attributes
>is probably always a preferable option...
That gives me the opportunity to ask a question that's been
bugging me for a while.
I'm designing a document type. Is there any circumstance
when you would advise me to use a Processing Instruction
rather than an empty element with attributes? I can't think
of one myself, but I'm sure the XML designers must have had
something in mind.
Mike Kay