ANGBASE
Type: real · Stored in: drawing · Initial value: 0
Direction of angle 0, from which the angles written by the program are measured (in LIST, DIST, the PROPERTIES palette…). It is entered in degrees or in any angle format (90, 90d0'0", 100g, 1.5708r); getvar returns it in radians, as in AutoCAD.
0: east (positive X axis).90: north.180: west.270: south.
Notes
Typed polar coordinates (@50<30) are always measured in degrees from the X axis, counterclockwise.