Specifies which multipole transitions to include in the calculations. The options are: only dipole (

The additional field `l2lp` can be used to calculate individual dipolar contributions
coming from
(`l2lp`=1) and from
(`l2lp`=). Notice that in polarization dependent data there is also a
cross term, which is calculated only when `l2lp`=0.

MULTIPOLE 2 0 *combine dipole and quadrupole transitions. MULTIPOLE 0 -1 *calculate dipolar L -> L-1 transitions