Re: On constraining/validating datatypes

Peter Murray-Rust wrote:
> 
> For the XML-LINK discussions, I think it's important to decide whether the
> spec is implementable by a CS grad student *without previous HyTime
> experience* and purely from the spec.  I think it should be.  

Yes. Under the current terms and relationships, that is the best goal.

> I also think
> those implementations should have a communality of function [I understand,
> but I'm worried by, simply defining the terms and leaving the rest up to
> the implementation.  Implementers need more guidance than that.]

This is true, but harder.  Implementation guidance in VRML
specifications 
is being decided after the fact of language specification
in the process of conformance testing design.

However, VRML is a single application language.  Is XML?  What 
levels of conformance are tested for XML and how is that related 
to implementation certification? I think deciding that will make 
it easier to decide where the lines are.

len