Non-sequential trace. Src# refers to the object number of the desired source. If Src# is zero, all F/LMk8RgR
sources will be traced. If Splt? is non-zero, then splitting is on. If Scat? is non-zero, then scattering fyT|xI`iD
is on. If Pol? is non-zero then polarization will be used. If splitting is on polarization is automatically - e0[$v
selected. If IgEr? is non-zero, then errors will be ignored