Not all tasks in a DC system are associated with a logical terminal; a task not associated with a logical terminal is called a nonterminal task. For example, you can initiate processing of another task while your task is still running; this is called attaching a task. The new task competes for processor time and runs concurrently with all other tasks, but is not associated with any terminal. You can indicate either that the nonterminal task should begin processing immediately or after a specified length of time.
Because nonterminal tasks are not associated with an LTE, they cannot perform processing related to a logical terminal. For example, nonterminal tasks cannot perform terminal I/O, receive messages, or monitor resource usage.
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