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EBNF in EBNF
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1. EBNF in EBNF
EBNF (Extended Backus-Naur Form) and BNF (Backus-Naur Form) are notations (meta-language) for describing other languages (including EBNF itself). Here is a syntax diagram of EBNF that describes EBNF.
Syntax diagram for EBNF
2. EBNF textual grammar

Syntax = { Production } . Production = "Variable" "=" Expression "." . Expression = Term { "|" Term } . Term = Factor { Factor } . Factor = "Terminal" | "Variable" | "[" Expression "]" | "{" Expression "}" | "(" Expression ")" .

3. BNF textual grammar

Syntax = X1 . X1 = . X1 = Production X1 . Production = "Variable" "=" Expression "." . Expression = Term X2 . X2 = . X2 = "|" Term X2 . Term = Factor X3 . X3 = . X3 = Factor X3 . Factor = X4 . X4 = "Terminal" . X4 = "Variable" . X4 = "[" Expression "]" . X4 = "{" Expression "}" . X4 = "(" Expression ")" .

4. End of page
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