program.on("--help", function() {
  console.log(function() {/*
  Examples:
    # pass an input and output file
    $ cssnext input.css output.css
    # start cssnext watcher (need input & output)
    $ cssnext --watch input.css output.css
    # using stdin and stdout
    $ cat input.css | cssnext > output.css
  */
  }.toString().split("\n").slice(1, -2).join("\n"))
})