Sets the unit of measurement for angles.
Type: Integer
Saved: In the drawing file
Range: 0 (Decimal degrees, 0.0000d), 1 (Degrees/minutes/seconds, 0d00'00"), 2 (Gradians, 0g), 3 (Radians, 0r), 4 (Surveyor's units, N0.00dE)
Default: 0