An informal summary of a diplomatic interview or conversation between the foreign minister or his assistant and a diplomatic envoy or his representative. It merely serves as an aid to memory and does not begin with a formula of courtesy.

It may be addressed to a head of a republic or to the head of a kingdom. A formal note from the head of one state to the head of another state, accrediting ambassador, as one authorized to act for his government or head of state

A document issued by a head of a state/president accrediting one or more persons to represent him or the government in in international conferences and negotiations or expressing the consent of the state to be bound by a treaty, convention or agreement. The essential feature is that the representative to whom it is issued is rested with all the necessary power and authority to take part, negotiate, conclude and sign agreements on behalf of the state. In the signing of treaties or agreements, the action of the representative is essentially subject to ratification by the government concerned.

A formal note from the head of one state to the head of another state, recalling a previously accredited ambassador, a minister, or other diplomatic agents.An incoming chief of mission usually hands a letter of recall of his predecessor to the head of state of a foreign government