Doctype!

[choscos]

I read many WML tutorials on the web and I've always found this header in all WML:

<?xml version="1.0"?>
<!DOCTYPE wml PUBLIC "-//PHONE.COM//DTD WML 1.1//EN" "http://www.phone.com/dtd/wml11.dtd" >

does anyone know what do they do in a WML page?
and to be more specific

what does the XML part do? and what does the doctype do?

thanks in advance.

[kisember]

The wml is a kind of xml (eXtensible Markup Language). The first line says, that it is coform to xml rules (syntax).
The second line say that it is conform to wml 1.1 (semantic) standard defined in http://www.phone.com/dtd/wml11.dtd (Document Type Definition)