-----Original Message-----
From:   Don Park [SMTP:donpark@d...]
Sent:   Sunday, November 12, 2000 6:29 PM
To:     xml-dev@l...
Subject:        RE: Subsetting/ Canonical Parsers/ XML Compliance/ etc.

> > I'm wondering if our experience is unusual. -Tim

> I don't know what Antarcti.ca's use-cases are, but they probably
> are within the bounds of Common-XML.

Interesting point that Tim raises.  The real-world interoperability problems that I hear about seem to mainly involve  encodings, whitespace handling, entities of various types, namespaces, and of course valid/wellformed. A good number of them are "RTFM" issues not conformance per se, e.g. whitespace handling, and the numerous ways that people manage to get confused by namespace declarations and prefixes.

My suspicion is the same as Don's -- people who don't have interoperability problems are probably not pushing the XML 1.0  envelope, either by accident or design.  I'd be very interested to hear about robust applications that work well across a variety of  platforms and parsers yet depend on  things (like attribute default values, processing instructions, and external parsed entities) that are outside the Common XML Core.