Usinge+e−collision statistics accumulated by CLEO II.V, III detector configurations at CESR we perform Dalitz plot analyses of D‐meson decays into three pseudoscalars. On this Workshop we present recently published and preliminary results of ongoing analyses of the decays,D0 → KS0&pgr;+&pgr;−,D0→ &pgr;+&pgr;−&pgr;0,D0 → KS0&eegr;&pgr;0. The goal of this study is to find out the leading intermediate states for each decay and to present their relative contribution in terms of complex amplitudes and relevant fit fractions. For first observed decays we measure the branching ratios. For the decays with high rate we perform a search for CP violation in terms of integrated rate, fit fractions and complex amplitude parameters. © 2003 American Institute of Physics