  We discuss the implementation of physically meaningful branching ratios
between the CRD and PRD contributions to the emissivity of a polarized
multi-term atom in the presence of both inelastic and elastic collisions. Our
derivation is based on a recent theoretical formulation of partially coherent
scattering, and it relies on a heuristic diagrammatic analysis of the various
radiative and collisional processes to determine the proper form of the
branching ratios. The expression we obtain for the emissivity is
$\varepsilon=\left[\varepsilon^{\tiny (1)}-\varepsilon^{\tiny (2)}_{\rm f.s.}
\right]+\varepsilon^{\tiny (2)}$, where $\varepsilon^{\tiny (1)}$ and
$\varepsilon^{\tiny (2)}$ are the emissivity terms for the redistributed and
partially coherent radiation, respectively, and where "f.s." implies that the
corresponding term must be evaluated assuming a flat-spectrum average of the
incident radiation.
