Request For Comments (RFC)
A publication from various standards-setting organizations, most notably the Internet Engineering Task Force (IETF). An RFC is submitted by an individual or a group, usually in the form of a memorandum describing protocols, procedures, research, et cetera that are relevant to the Internet and its supporting systems. While not all RFCs are standards (particularly the purely informational ones), RFCs serve as the official documentation for Internet Standards.
Typically, these publications are informational in nature, though RFCs have been written purely for comedic value.