📄⚙️🌳

#ebnf #parser #compiler #syntax tree #language processing #formal grammar #language definition

🔡:={🅰️|🅱️}

#ebnf #production rule example #syntax definition #grammar example #formal language notation #concrete syntax

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#ebnf #syntax notation #meta-syntax #grammar rules #optional #alternation #syntax symbols

📜::=🧱

#ebnf #bnf #production rule #formal language #Backus-Naur Form

📜➕✨

#ebnf #Extended BNF #Backus-Naur Form extension #grammar notation #enhanced syntax #syntax extension