Returns t if a given transform is a unit transform.
t
graphics-ports
unit-transform-p transform => bool
transform
A transform.
bool
A boolean.
The function unit-transform-p returns t if transform is the unit transform.
unit-transform-p
See graphics-state for details of how a transform is used.
graphics-state
CAPI User Guide and Reference Manual (Macintosh version) - 3 Aug 2017
