Kent Starr, elderburn / mindspring.com > It can also be thought of a a meta-language, in that, with XML you define > customized tags and ... > ...then we can exchange even > highly customized data unique to our respective needs The huge cost of this is performance, the other is that XML has some really wierd constructs that are not easily parsed. OTOH, most OO languages use the same complex sturcture map, perl is wider in that it allows a mixing of arrays and hashes. XML has a lot of stuff borrowed from the HTML family which has no place except in browser documents. XML proponents would have you build your dataservers to their constructs, a headache nobody needs. All this data interchange stuff is nice but the only really useful application of XML is to the browser itself. Forget DTDs, all you need is a CSS file to give the rendering instructions to your specific markup tags. As much sense as this makes, damn little CSS is actually appears in browsers and none of it accomodates XML markup (so far). Personaly, I would just stick to a handful of languages and parse complex structures between them, assuming they have the same level of complex structure complexity. My ideal is to be able to serialize and emit complex data stuctures including anonymous methods as well as machine code to remote receivers. John ===== John van Vlaanderen ############################################# # CXN, Inc. Contact: john / thinman.com # # # Proud Sponsor of Perl/Unix of NY # # http://puny.vm.com # ############################################# __________________________________________________ Do You Yahoo!? Get email at your own domain with Yahoo! Mail. http://personal.mail.yahoo.com/