Application programming interface for creating customized terminal subsystems.

## Package Specification

This package provides classes and interfaces to support terminal subsystems.

The class TerminalServiceSubSystemConfiguration is the main factory for creating a terminal subsystem. By deriving from it, extenders can create their customized terminal subsystem configuration which can then be registered against their system types. The class TerminalServiceSubSystem is a basic ITerminalServiceSubsystem implementation, containing terminal instances as children.