$SourceType
Format
$SourceType type axis dir θ φ ψ // type, axis, and dir are integers, the others are floating.
type: 1~4 dual wave: sin, exp, sin*exp, multi-sine;
11~14 one dir.: sin, exp, sin*exp, multi-sine;
21~24 TF/SF
the unit of theta, phi, and psi is degree, it will be changed to radians.
Example
$SourceType 12 3 -1 0 0