Uniform Resource Locator (URL)

• Format: protocol://user:password@server:port /path/document[#reference|?query]

• Not all fields always required

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Protocols:
file file://server/path/document

ftp ftp://user:password@server/path/document
gopher like file
http like file
mailto mailto:user@host
news news://server/newsgroup[/article]
telnet like ftp
wais like file

If user/password omitted, browser prompts

If port omitted, uses ìwell-known portî

#reference Internal reference in the document

?query Includes name=value pairs from a form