The terms ''foobar'',}} ''foo'', ''bar'', ''baz'', ''quux'',, regardless of length. Can be extended as ''quu(u…)x'' for ''n'' desired variables; this includes the (more modern) backwards extrapolation ''qux''.}} and others are used as metasyntactic variables in computer programming or computer-related documentation. They have been used to name entities such as variables, functions, and commands whose exact identity is unimportant and serve only to demonstrate a concept.
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