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Process Support

Process support facilities are discussed in detail in Chapter 11. UIPACK implements Process Management whereby an Application Program can create several Subprocesses or Detached Processes, each being allocated a Viewport on the Terminal Screen. The Main Application Program can then act as a Server whereby output from each Process will be directed to the appropriate Viewport and the physical keyboard may be logically connected to one of the Processes. The Operator may choose to disconnect the keyboard temporarily from one Process and connect it to another one. UIPACK allows a maximum of 16 Processes to be created by an Application Program, although this limit is unlikely to be reached because of quota restrictions imposed by VAX/VMS. The created Processes are called Client Processes in the following discussion, the Main Application Program that created them being called the Server.

Liz Buckle
Fri Jan 13 17:40:55 CST 1995