module completions {

  # force completion of pending disk writes (flush cache)
  export extern sync [
    --data(-d)                # sync only file data, no unneeded metadata
    --file-system(-f)         # sync the file systems that contain the files
    ...FILE: string           # If one or more files are specified, sync only them, or their containing file systems.
    --help(-h)                # Print help
    --version(-V)             # Print version
  ]

}

use completions *