  A global previous analysis of two-body nonleptonic decays of $D$ mesons has
been extended to the decays involving light scalar mesons. The allowance for
final state interaction also in nonresonant channels provides a fit of much
improved quality and with less symmetry breaking in the axial charges. We give
predictions for about 50 decay branching ratios yet to be measured. We also
discuss long distance contributions to the difference $\Delta \Gamma$ between
the $D_S$ and $D_L$ widths.
