https://www.digigrup.org/ccdd/rtty.htm
https://invidious.nerdvpn.de/watch?v=50AafpdRuIM
https://famicoman.com/2021/06/07/2021-06-07-printing-to-an-esc-pos-receipt-printer-from-linux/
https://invidious.nerdvpn.de/watch?v=IyrZ4ATsMOE