For application-specific terms, refer to the help feature of that application.

Unicode

A system for the interchange, processing, and display of characters for every language of the modern world. See ASCII.

URL

Uniform Resource Locator. It is the standard means of addressing files on the Internet. See Bookmarks/Favorites, Domain Name, Relative URL.

Usability

A term used to describe how easy interfaces and navigational schemes are to use.

User

The person accessing a website by a browser. See Web Designer, Client.