"many of the early RFCs were actual Requests for Comments and were titled as such to avoid sounding too declarative and to encourage discussion.[8][9] The RFC leaves questions open and is written in a less formal style. This less formal style is now typical of Internet Draft documents, the precursor step before being approved as an RFC." https://en.wikipedia.org/wiki/Request_for_Comments
"many of the early RFCs were actual Requests for Comments and were titled as such to avoid sounding too declarative and to encourage discussion.[8][9] The RFC leaves questions open and is written in a less formal style. This less formal style is now typical of Internet Draft documents, the precursor step before being approved as an RFC." https://en.wikipedia.org/wiki/Request_for_Comments