RDN

      Relative distinguished name.
    registry
      A system facility for the use of each framework and its service providers. It provides a programming interface, allowing its clients to access status and control over each framework and its services. It is implemented as a general purpose data store.
    remote initial program load (RIPL)
      (1) The initial program load of a remote requester by a server on which the appropriate information is located. (2) Supplies a remote requester with the data and programs required to boot the remote requester with an operating system. The data and programs are located on and supplied by a server. The operating system can be DOS or OS/2.
    resolution
      In computer graphics, a measure of the sharpness of an image, expressed as the number of lines and columns on the display screen or the number of pels per unit of area.
    resource script file
      One or more resource statements that define the type, identifier, and data for each resource.
    resource servers
      Servers that manage and provide access to operating system entities (such as files, lists of user names, named pipes, and semaphores). Some resource servers are also name servers for the entities they control (Such as File Server).
    return code
      (1) A code used to influence the execution of succeeding instructions. (A) (2) A value returned to a program to indicate the results of an operation requested by that program.
    REXX/2
      Restructured extended executor programming language for OS/2. A general-purpose programming language for command procedures, application front-ends, and user-defined macros, or subcommands. REXX programs are executed by a language processor (interpreter); that is, the program is executed line-by-line and word-by-word, without first being translated to another form (compiled).
    ring level
      See privilege level.
    RIPL
      Remote Initial Program Load.
    RISC
      Reduced instruction set computer.
    RM client
      The portion of the Registry Manager that executes in the task space of the client. There may be one or more RM clients in the system. Each RM client communicates with the RM server to execute tasks on behalf of the client.
    root name server
      A Microkernel service that controls the first level of the name space. It does not support persistent information, and implements a subset of the Workplace Name Services API.
    run-time
      Synonym for execution time. (T) (A)

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