TTP02-18 Three aspects of tau decays

Three topics of relevance for $\tau$-decays will be presented: i) the possibility to search for CP violation in the Cabbibo suppressed channels $\tau \to \nu K \pi \mbox{and} \nu K \pi \pi$, ii) recent partial results on the semileptonic decay rate in $\as^4$ accuracy, and iii) the possibility to determine the strange quark mass in inclusive Cabbibo suppressed decays.