\begin{equation}
\ifnumSw \mLevBF_{t,i} = \underbrace{{\bf \Wage}_{t} \pmb{\ell}_{t,i}}_{\equiv\,\yLevBF_{t,i}} + \underbrace{{\Rprod}_t}_{\daleth+\rfree_{t}} \kLevBF_{t,i}.
\label{eq:mDef}
\end{equation}
