foo

The terms foobar (), foo, bar, baz, qux, quux, and others are used as metasyntactic variables and placeholder names 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.
The style guide for Google developer documentation recommends against using them as example project names because they are unclear and can cause confusion.

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