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Glossary - X
Xerography
Inkless reproduction process that uses static electricity and toner powder to copy an image (Xerox).
X-height
A typographic term referring to the height of letters with neither ascenders nor descenders, such as the letter x. The x-height of a typeface plays a major role in its apparent size - typefaces with a high x-height look significantly larger than typefaces with a low x-height, even when both are set the same point size.
XML
Extensible Mark-up Language; a meta-language containing a set of rules for construction of other mark-up languages. With XML, people can make up their own tags, which expands the amount and kinds of information that can be provided about the data held in the document. XML enables designers to create their own customised tags to provide functions not available with HTML.
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