HTTP, HTML/XML and URL

HTTP

 
     GET /index.html HTTP/1.1
     Accept-Charset: iso-8859-5, unicode-1-1
     ...
 

HTML/XML

 
     <TITLE> Web History <\TITLE>
     <P> A paragraph of text <\P>
 
 

URL

     http://www.w3.org/People/danield
     news:comp.windows.x
     mailto:danield@w3.org