Define a memo and describe the elements that constitute it.

Short for “memorandum,” a memo is a means of written communication among a closed group of participants in a project of some sort. Usually used in a business context (but also in academic or other contexts) it has a “To” line, in which the names or titles, along with addresses, of the intended members of the group are addressed; a “From” line, which identifies the sender of the communication (name or title); a ”Subject” line, which names the project or item for discussion; and a “body,” in which a speech-act is performed (a request, a reminder, an utterance of fact or news, etc. , along with information about a date of a meeting, or some such organizational detail), followed by some sort of social closing (“Thanks in advance,” “I’ll be available to explain,” Don’t forget to…,” etc.). The main function of a memo is to keep members of a production team equally informed of progress on a project.