Amplitude Analyses of D Decay Dalitz Plots

We describe Dalitz plots arising in studies of $D$-meson decays, and what we have learned from them in recent years. After some mention of technique and history, we focus on decay of the $D^{\pm }$ and $D_s^{\pm }$ mesons to the $K^{-}{K}^{+}{\pi }^{\pm }$ final state, and on $D_s^{\pm }$ decay to ${\pi }^{+}{\pi }^{-}{\pi }^{\pm }$. Some mention of other Dalitz plots involving $D$-meson decays is also made.