On Sat, 27 Jul 2002, AmirHossein GholamiPour wrote:
> Hello to everybody
> Dear All
> I don't know much about a xml parser and what it is doing and how I can
> write a parser for myself,and also when do we call a xml document invalid.
> I mean we call it valid in relation to its DTD but when it is invalid.
> One more question,excuse me,what is a Style Sheet,and CSS?
> Thank You Very Much!
> Be Successful!
>
A DTD tells you "these are the elements and attributes that may appear
in a document, and the order and combinations in which they may
appear." If a document doesn't match those specifications, for any reason
whatever, it is invalid.
For information about stylesheets, CSS, parsers, and XML in general, I
would recommend that you buy the book "Learning XML" by Erik Ray,
published by O'Reilly. It's a good introduction, and the examples are
actually fun to read.
--
J. David Eisenberg http://catcode.com/
