This Recommendation defines in an abstract way the Document Transfer and Manipulation (DTAM) service within the OSI application layer in terms of a) the primitive actions and events of the service; b) the parameter data associated with each primitive action and event; c) the relationship between, and the valid sequences of, these actions and events. The DTAM service is provided in conjunction with the Reliable Transfer Service Element (RTSE) service (Recommendation X.2 18), the Association Control Service Element (ACSE) service (Recommendation X.217), and the Presentation service (Recommendation X.2 16). In the Transparent mode, DTAM service is provided in conjunction with the Session service (Recommendation X.2 15) according to the rules of Recommendation T.62bis. This Recommendation does not specify individual implemenhtions or products, nor does it contain theimplementation of entities and interfaces within a telematic system.