Whould someone explain what is XML please ?

[Sharg]

Hi,
what exactly is XML ?

How does it affect web page design and functionalities ? How can it help ? Why is it not spread ?

Is it server side and require an interpreter to be installed on the server like php or perl ?
Or is it client side like javascript ?

Thanks,

[JimF]

http://www.w3.org/XML/

RTFM! ;)

j/k

-jim