NET/MASTER Network Control Language (NCL) Reference Manual

Glossary
106126 Tandem Computers Incorporated Glossary–33
subject. An RMS device, process, or other named entity with which a given message is
concerned.
Subsystem Control Facility (SCF). The Tandem interactive interface that allows operators
and network managers to configure and control data communications subsystems.
Subsystem Programmatic Interface (SPI). A common, message-based Tandem interface
used to build and decode messages that are used for communication between
requesters and servers.
subsystem. A process or set of processes that manages a cohesive set of objects.
subsystem ID. A data structure that uniquely identifies a subsystem (including whether
it is a Tandem subsystem or a subsystem you write). It consists of the subsystem
owner, the subsystem name, and the subsystem version number.
subsystem objects. See objects.
summary record. The brief description of a command in the command help database.
super group. In the Guardian environment, a group of users with a user ID of 255,n.
suppression character (-). When prefixed to a NonStop NET/MASTER MS command,
the character that prevents the command from being echoed to the screen or logged in
the activity log.
swap file. A disk file containing data taken from memory.
swap volume. The disk volume that contains the swap file for a Guardian process.
swapping. The reversal of the dimensions of the current logical windows.
symbol. A lexical element that represents itself: for example, ABC, IF, and 999. There
are three types of symbols: unquoted strings, keywords, and numbers.
symbolic name. The external name of a map: for example, $MSG is the symbolic name
of the map that describes the structure of messages.
synchronous. Two or more events occurring dependently. NCL procedures executed
using the EXEC command execute serially and, therefore, synchronously.
synchronous data link control (SDLC). The link-level protocol used for the transmission of
SNA path information units (PIUs).
synchronous panel. A panel displayed immediately by an NCL process that suspends
processing while the panel waits for input.
System Services Control Point (SSCP). The subsystem responsible for managing and
allocating all resources in a domain in an IBM Systems Network Architecture (SNA)
network and for communicating with network operators. There is one SSCP for each
domain in an SNA network.
System Support Services. A group of NonStop NET/MASTER MS services that includes
the Activity Log Browse facility, the Command Entry facility, and the Display/Update
SYSPARMS Settings facility.