  We study the effects of Rayleigh and Raman scattering on the formation of
polarized spectral lines in a $\Lambda$-type multi-term atom. We fully take
into account the partial redistribution of frequency and the presence of atomic
polarization in the lower states of the atomic model. Problems that can be
modeled with this formalism include, for example, the formation of the Ca II
H-K and IR triplet, the analogous system of Ba II, and the Ly$\beta$-H$\alpha$
system of hydrogenic ions.
