Help Menu
The usual Windows help features are present:
Miscellaneous
Definition of Azimuth and Altitude
Azimuth
The angle range is from 0° to 360° clockwise from North, see below. The azimuth will not make a difference to the rotation of the graphic if the Altitude is set to 90°.
Altitude
The angle range is from 0° to 90° from the horizontal, see below.