[STD8]     Internet Standard 8,
              <https://www.rfc-editor.org/info/std8>.
              At the time of writing, this STD comprises the following:

              Postel, J. and J. Reynolds, "Telnet Protocol
              Specification", STD 8, RFC 854, DOI 10.17487/RFC0854, May
              1983, <https://www.rfc-editor.org/info/rfc854>.

              Postel, J. and J. Reynolds, "Telnet Option
              Specifications", STD 8, RFC 855, DOI 10.17487/RFC0855, May
              1983, <https://www.rfc-editor.org/info/rfc855>.