ViewPoint Manual

ViewPoint Manual—426801-001
5-1
5
Functional Description
The first three figures in this section provide an overview of the ViewPoint architecture.
The remainder of the section illustrates and discusses three major aspects of the
application—TACL (command and control), network status, and event presentation.
The section also introduces all significant terms relevant to the ViewPoint application
and shows their functional context.
This section describes how ViewPoint works. For a step-by-step description of how to
use ViewPoint to perform particular tasks, read Section 2, Using ViewPoint
.
Overview of ViewPoint Architecture
The ViewPoint application provides three basic operating screens. These permit three
kinds of activities with respect to objects controlled by the subsystems in a system or a
network of systems. Figure 5-1 illustrates this concept, showing the three screens:
command and control (TACL), network status, and events. You can select any one of
these screens with function keys on the terminal keyboard.
The subsystem processes shown in Figure 5-1 can be Compaq-provided processes, such
as PUP, FUP, TMF, or Pathway, or they can be processes provided and integrated into
the application by your own network application programmers. Some examples of the
objects referred to in Figure 5-1 are CPUs, disks, terminals, and communications lines.
Note. Some ViewPoint applications run on dedicated terminals without direct access to the
TACL command and control screens.