NET/MASTER Network Control Language (NCL) Programmer's Guide

Types of NonStop NET/MASTER MS Environments
Environments and Command Processing
106160 Tandem Computers Incorporated 16–15
Background Processing Environments
If a NonStop NET/MASTER MS command or NCL process is executing in a
background processing environment, the current execution environment is the
background processing environment.
A background processing environment is an environment that is owned and
controlled by a virtual user. You can use the NonStop NET/MASTER MS SUBMIT
command to send a NonStop NET/MASTER MS command or NCL procedure to a
virtual user to execute on your behalf. You can also use the KEEP and ROUTE
operands of the AT and EVERY timer commands to send a timer command to a virtual
user to execute.
Figure 16-6 shows the full environmental hierarchy for a virtual user. The difference
between the hierarchy for a virtual user and the hierarchy for a real user is that a
virtual user does not have a top-level environment and has only one primary
processing environment.