Shorthands on top
of Shorthands
lThe productions are:
lA ¨ V 
lA ¨ V + A
lGroup by common
left-hand sides
lUse | (read ÒorÓ) to represent alternatives:
lA ¨ V | V + A
lV ¨ a | b
| c
lNote: | Òbinds more looselyÓ than other symbols.
lSame grammar, just a briefer notation.
lV ¨ a
lV ¨ b
lV ¨ c