HTML and CSS Reference
In-Depth Information
Data URIs in action
Other Emerging URL Forms
New protocols are emerging as the Web starts to converge with television and mobile
devices. For example, a telephone number might look like tel: number , where number may
include any special dialing prefixes. For example, here we have a link that would call a
directory assistance number:
<a href="tel:+1-212-555-1212">
New York City Directory Assistance
This syntax is already supported by browsers integrated with mobile devices like Apple's
A television channel URL form might look like tv:// channel, whereby channel is either
an alphanumeric name (such as nbc or nbc7-39) or a numeric channel number. A variety of
esoteric schemes are out there already. If you are interested in new URL schemes, take a
look at the W3C area on addressing ( for more information.
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