Language and Conventions Overview


Introduction to GPAs

Global Parameter Access (GPA) symbols provide a means of accessing certain functional data which is used by the NX system.

A GPA symbol always begins with a ampersand (&) and is a maximum of six characters long. GPAs are defined in the system and may not be altered.

Each GPA symbol is associated with either a unique global parameter or a constant and has an access type, a data type, and a data range. The following list contains a few of the GPA symbols which are available:

Operation

Symbol

Access Type

Data Type

Range

Grid size

&GSIZE

RW

N

GE 0

Line density

&DENS

RW

N

[1..3]

Normal

&NORMAL

C

N

=1

Heavy

&HEAVY

C

N

=2

Thin

&THIN

C

N

=3

For more information on GPA symbols, refer to GPA Symbol Format Summary and Global Parameter Access Symbols.