Johan Bijnens (Lund), Juerg Gasser (Bern)
An overview is given of Chiral Perturbation Theory and various
applications to eta decays. In particular, the main decay
$\eta\to3\pi$ is discussed at the one-loop level, and estimates of the
higher order corrections are given. The importance of $p^6$ and higher
order effects in double Dalitz and $\eta\to\pi^0\gamma\gamma$ decays
is pointed out. In all these cases the need for new experimental
results is stressed.