User Guide

Placing and Editing Parts
89
The letter a indicates that the attribute has been annotated
as a result of back annotation or has been assigned by the
packager.
Any changes you make to the part attributes are made to
the individual part instance you selected. The original
part contained in the symbol library remains unchanged.
Attribute names can contain any alphanumeric characters
(A–Z, 0–9) and the underscore character. Attributes
cannot be self-referencing.
The two check boxes at the bottom of the Edit Attribute
dialog box enable you to control whether or not
non-changeable or system defined attributes are included
in the display.
System defined attributes have reserved attribute names.
PSpice Schematics uses these attributes for specific
purposes, primarily during netlisting and packaging. See
Appendix D,
Attribute List for a complete list and
explanations of attributes. System defined attributes are
as follows:
BIASVALUE
COMPONENT
COLOR
ERC
FAMILY
FLOAT
GATE
GATETYPE
IMPL
LABEL
MARKERTYPE
MODEL
NODE
PAGECOUNT
PAGENO
PAGESIZE
PAGETITLE
PART
PKGREF
PKGTYPE
PLMODEL
PROBEVAR
REFDES
SIMULATIONONLY
SOURCE
STIMTYPE
STIMULUS
SWAP
TAG
TEMPLATE