[XHR] "the specification of a proxy"...?

After the send(data) algorithm, there is this paragraph:

    If the user agent allows the specification of a proxy it should modify
    the request appropriately; i.e., connect to the proxy host instead of
    the origin server, modify the Request-Line and send Proxy-Authorization
    headers as specified.

I don't understand the construction "If the user agent allows the  
specification of a proxy". What does it mean to allow the specification of  
a proxy? What is the specification of a proxy? Or am I just misreading it?

-- 
Simon Pieters

Received on Friday, 30 March 2007 21:04:06 UTC