| INTERNET DICTIONARY - LETTER "X" |
| X |
X is the name for TCP/IP based network-oriented window systems. Network window systems allow a program to use a display on a different computer. The most widely-implemented window system is X11 - a component of MIT's Project Athena. |
| X.25 |
A data communications interface specification developed to describe how data passes into and out of public data communications networks. The CCITT and ISO approved protocol suite defines protocol layers 1 through 3. |
| X.400 |
The CCITT and ISO standard for electronic mail. It is widely used in Europe and Canada. |
| X.500 |
The CCITT and ISO standard for electronic directory services. See also: white pages, Knowbot, WHOIS. |
| XML |
eXtensible Markup Language - A programming language/specification developed by the W3C. XML is a pared-down version of SGML, designed especially for Web documents. It enables Web authors and designers to create their own customized tags to provide functionality not available with HTML. For example, XML supports links that point to multiple documents, as opposed to HTML links, which can reference just one destination each. XML provides a more powerful set of tools for developing a new generation of Web applications: Whether XML eventually supplants HTML as the standard Web formatting specification depends a lot on whether it is supported by future Web browsers. So far, the only major browser vendor to endorse XML is Microsoft, which has stated that XML will be supported in a future version of Internet Explorer. |
| XDR |
See: eXternal Data Representation |
| Xerox Network System (XNS) |
A network developed by Xerox corporation. Implementations exist for both 4.3BSD derived systems, as well as the Xerox Star computers. |
| XNS |
See: Xerox Network System |