From Wikipedia
Foo is a metasyntactic variable used heavily in computer science to represent concepts abstractly and can be used to represent any part of a complicated system or idea including the data, variables, functions, and commands just to name a few. Foo is commonly used with the metasyntactic variables bar and foobar. The word foo itself has no meaning and is merely a commonly used logical representation that is used much like the letters 'X' and 'Y' in algebra.
Foo is a metasyntactic variable used heavily in computer science to represent concepts abstractly and can be used to represent any part of a complicated system or idea including the data, variables, functions, and commands just to name a few. Foo is commonly used with the metasyntactic variables bar and foobar. The word foo itself has no meaning and is merely a commonly used logical representation that is used much like the letters 'X' and 'Y' in algebra.
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