module OptParse: sig .. end
Modules for GNU getopt(3)-style command line parsing.
module Opt: sig .. end
This module contains the basic functions and types for defining
new option types and accessing the values of options.
module StdOpt: sig .. end
This module contains various standard options.
module Formatter: sig .. end
This module contains the types and functions for implementing
custom usage message formatters.
module OptParser: sig .. end
This module contains the option parser itself.