FORTRAN Reference Manual

Glossary
FORTRAN Reference Manual—528615-001
Glossary-2
CRE.
and to the same open of that file. The CRE manages the connection. The CRE
provides connection services for shared files.
In FORTRAN, a connection is an association between a unit number and a file.
CRE. See Common Run-Time Environment (CRE).
Crossref. A stand-alone product that collects and prints cross-reference information for your
program.
C-series system. A system that is running a C-series version of the operating system.
data block. The smallest independently relocatable piece of a program. Data blocks contain
statically allocated variables or constants. Compare with code block.
data segment. A virtual memory segment holding data. Every process begins with its own
data segments for program global variables and runtime stacks (and for some libraries,
instance data). Additional data segments can be dynamically created.
DEFINE. An HP Tandem Advanced Command Language (TACL) command you can use to
specify a named set of attributes and values to pass to a process.
D-series system. A system that is running a D-series version of the operating system.
entry point. A location where a code block can be accessed.
extended data segment. A segment that provides up to 127.5 megabytes of data storage.
A process can have more than one extended data segment.
file ID. The last of the four parts of a file name; the first three parts are node name (system
name), volume name, and subvolume name.
file name. A sequence of four names, separated by periods, that specifies the location of a
file. A file name consists of a:
•
Node name (system name)
•
Volume name
•
Subvolume name
•
File ID
global data. The identifiers in a data block that is accessible to all procedures in a program.
high PIN. A process identification number (PIN) that is greater than 255. Contrast with low
PIN.
home terminal. Usually the terminal from which a process is started.