http://www.rfc-editor.org/rfc/rfc7942.txt
RFC 7942: Improving Awareness of Running Code: The Implementation Status Section, Y. Sheffer, A. Farrel2016-07-01T23:00:00-00:00This process is not mandatory. Authors of Internet-Drafts are encouraged to consider using the process for their documents, and working groups are invited to think about applying the process to all of their protocol specifications. This document obsoletes RFC 6982, advancing it to a Best Current Practice.