What we really need is a "na na" railroad diagram [0] (na na)+ [two bits|Batman!|(hey ){3} goodbye] 0: https://en.wikipedia.org/wiki/Syntax_diagram https://

What we really need is a "na na" railroad diagram [0] (na na)+ [two bits|Batman!|(hey ){3} goodbye] 0: https://en.wikipedia.org/wiki/Syntax_diagram https://en.wikipedia.org/wiki/Syntax_diagram