Railroad diagrams?

[lgarron]

Tinkering around a tad at https://tabatkins.github.io/railroad-diagrams/generator.html :

Details

Diagram(
Optional(NonTerminal("positive-int"), "skip"),
Choice(2,
Terminal('U'),
Terminal('L'),
Terminal('F'),
Terminal('R'),
Terminal('B'),
Terminal('D')
),
Optional(NonTerminal("positive-int"), "skip"),
Optional(NonTerminal("'"), "skip")
)

Details

Diagram( Terminal("["), NonTerminal("Sequence"), Terminal(","), NonTerminal("Sequence"), Terminal("]") )