NET/MASTER Messages Manual

Glossary
Glossary–30 106159 Tandem Computers Incorporated
ruleset. A collection of RMS rules that defines responses to events such as message
arrival and time conditions. The message handler uses the information in a ruleset to
set up its execution environment and respond to incoming messages. The timer driver
uses the information in a ruleset to set up the execution environments for the timers
that respond to time events.
run-time error. An error detected by NCL during the execution of an NCL process that
can be trapped using an error handler.
running trace. A trace that has started. Each running trace has a unique trace ID: for
example, 00001.
SCF. See Subsystem Control Facility.
scope. In NCL, the concept that activity takes place within boundaries. Scope affects
users, core statements, verbs, labels, and variables.
SCREEN COBOL. A procedural language used to define and control terminal displays.
screen. The physical surface of a terminal or workstation upon which information is
displayed.
Scroll prompt. Scroll ===>. You enter the amount of backward or forward scrolling at a
Scroll prompt.
scroll. To move up or down through a screen display by one or more lines.
SDLC. See synchronous data link control.
search path. The order in which NCL searches through procedure libraries for an NCL
procedure to execute.
security exit. A routine provided by an installation that replaces all NonStop
NET/MASTER User ID Management Services (UMS) functions.
security exit process. A process that determines whether a user has sufficient command
authority to use a Guardian utility and members of the utility’s command set.
Select Option prompt. Select Option ===>. You enter a menu option at the Select Option
prompt.
selection list. In NonStop NET/MASTER MS commands and NCL verbs, a list with a
finite number of entries from which one must be chosen to enter a NonStop
NET/MASTER MS command or execute a verb.
semaphore. The signal given to an inquiring NCL process that a resource is currently
locked. It is used to synchronize access to resources between cooperating NCL
processes.
serial execution. The execution of an NCL procedure that depends on the termination of
execution of another NCL process.
server class. A grouping of duplicate copies of a single server program, all of which
execute the same object program.