HP Integrity NonStop H-Series - Manual (Page 55)

Glossary
TNSVU User’s Guide— 528143-003
Glossary- 7
flat segment
architecture (for example, an adapter) is called firmware. Some firmware for ServerNet
components is downloaded when the system or component is loaded.
flat segment. A type of logical segment. Each flat segment has its own distinct address
range within the process address space that never overlaps the range of any other
allocated segments. Thus all allocated flat segments for a process are always available
for use concurrently. See also
logical segment and selectable segment .
graphical user interface (GUI). A user interface that offers point-and-click access to
program functions.
group list. An Open System Services (OSS) process attribute that is used with the effective
group ID of the process to determine the file access permissions for the process.
Guardian. An environment available for interactive or programmatic use with the HP
NonStop™ operating system. Processes that run in the Guardian environment usually
use the Guardian system procedure calls as their application program interface.
Interactive users of the Guardian environment usually use the HP Tandem Advanced
Command Language (TACL) or another HP product’s command interpreter. Contrast
with
Open System Services (OSS) .
Guardian environment. The Guardian application program interface (API), tools, and
utilities.
Guardian services. An application program interface (API) to the HP NonStop™ operating
system, plus the tools and utilities associated with that API. This term is synonymous
with Guardian environment. See also
Guardian .
Guardian user ID. See HP NonStop™ operating system user ID .
GUI. See graphical user interface (GUI) .
header. An object that, when specified for inclusion in a program’s source code, causes the
program to behave as if the statement including the header were actually a specific set
of other programming statements. A header contains coded information that provides
details (such as data item length) about the data that the header precedes.
In an Open System Services (OSS) program, a header is the name of a file known to
the run-time library used by a process. In a Guardian environment C language
program, a header is the file identifier for a file known to the run-time library used by a
process.
HP NonStop™ Open System Services (OSS). The product name for the OSS
environment. See also Open System Services (OSS) .
HP NonStop™ Kernel operating system. The former name of the operating system for HP
NonStop systems. See HP NonStop™ operating system user ID .