<P> A memorandum (abbrev.: memo; from Latin memorandum est, "It must be remembered (that)...") is a note, document or other communication that helps the memory by recording events or observations on a topic such as may be used in a business office . The plural form of the Latin noun memorandum so derived is properly memoranda, but if the word is deemed to have become a word of the English language, the plural memorandums, abbreviated to memos, may be used . (See also Agenda, Corrigenda, Addenda). </P> <P> A memorandum can have only a certain number of formats; it may have a format specific to an office or institution . In law specifically, a memorandum is a record of the terms of a transaction or contract, such as a policy memo, memorandum of understanding, memorandum of agreement, or memorandum of association . Alternative formats include memos, briefing notes, reports, letters, binders, etc . They could be one page long or many . They may be considered as grey literature . If the user is a cabinet minister or a senior executive, the format might be rigidly defined and limited to one or two pages . If the user is a colleague, the format is usually much more flexible . At its most basic level, a memorandum can be a handwritten note to one's supervisor . In business, a memo is typically used by firms for internal communication, as opposed to letters which are typically for external communication . Hence, we can consider memoranda as an upward communication process through which any complaint, issues, opinion, views and suggestion are put forward to the authorized level . </P> <P> A specific type of memorandum is the policy briefing note (alternatively referred to in various jurisdictions and governing traditions as policy issues paper, policy memoranda, or cabinet submission amongst other terms), a document for transmitting policy analysis into the political decision making sphere . Typically, a briefing note may be denoted as either "for information" or "for decision". </P>

When do you use a memo vs letter
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