Statement

• The semicolon at the end of a sentence can be omitted if it does not cause grammatical ambiguity (generally omitted)

• The function can return a value or not, such as

  let abc = function (a: number) if a > 0 then return else return 1 end end

• -- The contents of the line after the two consecutive minus signs are comments

• --[[ and ]] in the middle of a multi-line text also comments