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Line 3: == Principle of syntax diagrams == The representation of a grammar is a set of syntax diagrams. Each diagram defines a ~~nonterminal~~stage in a process. There is a main diagram which defines the language in the following way: to belong to the language, a word must describe a path in the main diagram. Each diagram has an entry point and an end point. The diagram describes possible paths between these two points by going through other nonterminals and terminals. Historically, terminals have been represented by round boxes and nonterminals by rectangular boxes but there is no official standard.

Syntax diagram: Difference between revisions