usage: cmark [-h] [-o [O]] [-a] [-aj] [infile]

Process Markdown according to the CommonMark specification.

positional arguments:
  infile      Input Markdown file to parse, defaults to STDIN

options:
  -h, --help  show this help message and exit
  -o [O]      Output HTML/JSON file, defaults to STDOUT
  -a          Print formatted AST
  -aj         Output JSON AST