Regular expression

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A regular expression (known as regex for short) is a string of characters that describes or matches a set of strings, according to certain syntax rules.

Regexes may be used in many editors and word processors, to provide powerful search and replace functions. DP-specific uses include the Search & Replace feature of the Proofreading interface, guiprep, and guiguts.

For a much more detailed article, including rules and examples, see Wikipedia's article on regular expressions. There is even more information, and tutorials, at

See also