Glossary
OSI/FTAM Responder Manual—425199-001
Glossary-25
objects. Each subsystem has a process through which applications can request services
by issuing commands defined by that subsystem; in some cases, this process is the entire
subsystem. Many subsystems also have interactive interfaces.
Subsystem Control Facility. See SCF.
Subsystem Control Point. See SCP.
Subsystem Programmatic Interface. See SPI.
subtree. A part of a tree comprising an arbitrary node as the subtree root node and all
the other nodes that can be reached by a path from this subtree root node. See tree.
summary state. A DSM state. See state (definition 2).
summary-state transition. See state transition.
super group. The set of Compaq NonStop Kernel users whose group ID is 255. User
IDs within the super group confer implicit authorizations not available to other users,
including the ability to execute sensitive SCF commands.
super ID. The Guardian user ID represented by the pair of numbers (255,255). The
local super ID is the group manager for the super group. By default, the super ID can
execute any command without restriction.
supported file attribute. A virtual filestore (VFS) file attribute that can be referenced or
modified. Contrast with partially supported file attribute.
swap disk. See swap volume.
swap volume. An optional disk volume used as an additional memory source during the
operation of any process under the Compaq NonStop Kernel.
TACL (Tandem Advanced Command Language). The standard command interpreter
and tool set for the Compaq NonStop Kernel.
tag parameter. An optional procedure-call parameter you can use in nowait applications
on Compaq NonStop systems to match nowait I/O requests with completions. If there
are multiple I/O requests outstanding in your application, the tag indicates which one
has completed.
TAL (Transaction Application Language). A high-level, block-structured language
used to write systems software and routines that support transaction-oriented
applications on Compaq NonStop systems. The TAL compiler translates source
programs written in TAL into executable object programs.
Tandem Advanced Command Language. See TACL.
Tandem application, presentation, and session process. See TAPS process.
Tandem LAN Access Method. See TLAM.
TAPS (Tandem application, presentation, and session) process. A process in the
OSI/AS subsystem that performs service and protocol functions for ACSE (in the
Application Layer), the Presentation Layer, and the Session Layer. The TAPS process