HFANG, Lab, PHI1, PHI2, THETA1, THETA2 
Defines or displays spatial angles of a spherical radiation
surface for sound radiation parameter calculations.
LabSpatial angle label.
ANGLE  | —  | Define spatial angles (default).  | 
STATE  | —  | Display spatial angles.   | 
PHI1, PHI2Starting and ending ϕ angles (degrees) in the spherical coordinate system. PHI1 defaults to 0 and
        PHI2 defaults to 360.
THETA1, THETA2Starting and ending θ angles (degrees) in the spherical coordinate system. THETA1 defaults to 0 and
        THETA2 defaults to 180.