Backus-Naur Form

notation (called Backus-Naur form) is a way to write rules of grammar of context, that means the descrip tion of formal languages. This notation is commonly used in compu ter science to write the syntax of programming languages and comm unication protocols. Was invented by John Backus in the 50s work on the Fortran language, and then modified by Peter Naur, and used to define the syntax of the language Algol. Backus-Naur Form is a set of production rules of the form: The importance of the symbols used here are as follows: Four of the above symbols are symbols of metalanguage - their meaning is defined in a language that define.

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