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I give a short overview of what has been done in radiative and semileptonicKaon decays in Chiral Perturbation Theory. This includes for semileptonicdecays the work which has been done to order $p^6$ including preliminaryresults of isospin breaking to that order in $K_{\ell3}$. For the radiativedecays I mainly present some results from recent work concerning$K_{\ell3\gamma}$.

Radiative and semileptonic decays in Chiral Perturbation Theory