1 Threading I

      1.1 Specification

      1.2 Grammar

    2 Threading II

      2.1 Specification

      2.2 Grammar

    3 String Match

      3.1 Implementation strategy

        3.1.1 Regular expressions and syntax

        3.1.2 Pattern-matching with racket/match

      3.2 Specification

      3.3 Grammar

    4 Exhaustive Enumerations

      4.1 Implementation strategy

      4.2 Specification

      4.3 Grammar