protocol

n.The rules of etiquette and ceremony that govern diplomatic relations between states.A diplomatic document, especially a treaty or compact, signed by the negotiators but subject to ratification.An amendment to a treaty or convention.Procedures followed during experiments.ComputingA standard that describes the technical processes used to exchange information, especially across a network.DiplomaticsThe first portion of a document, containing the administrative context of the action (the persons involved, the time and place, and the subject) and the initial formulas.

Notes

Examples of protocols5 include TCP/IP, SMTP, HTTP, and FTP.