  We analyse $D$ decays to two pseudoscalars $(\pi,K)$ assuming the dominant
source of $\mathrm{SU}(3)_F$ breaking lies in final state interactions. We
obtain an excellent agreement with experimental data and are able to predict CP
violation in several channels based on current data on branching ratios and
$\Delta \mathrm{A_{CP}}$. We also make predictions for $\delta_{K\pi}$ and the
branching fraction for the decay $D_s^+\to K^+K_L$.
