[LISPWORKS][Common Lisp HyperSpec (TM)] [Previous][Up][Next] Indirection in Modified BNF Syntax

An indirection extension is introduced in order to make this new syntax more readable:


If O is a non-terminal symbol, the right-hand side of its definition is substituted for the entire expression O. For example, the following BNF is equivalent to the BNF in the previous example:

(x [[O]] y)

O::= A | B* | C 

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