Multiple schemes in a URL?
· When a server responds to a URI, it
n Checks what media the client can handle
n Picks one of those to send
n “content negotiation”
· If a visually-impaired user clicks
n <a href="http://www.example.com/foo.gif# gif(0,0 1,1)
xpointer(id(chap1))">
n The server may fall back to an XML file
n The client tries fragment identifiers left-to-right, and uses
the first one that works