  The present paper deals with Atkin-Lehner theory for Drinfeld modular forms.
We provide an equivalent definition of $\mathfrak{p}$-newforms (which makes
computations easier) and commutativity results between Hecke operators and
Atkin-Lehner involutions. As applications we show a criterion for a direct sum
decomposition of cusp forms, we exibit $\mathfrak{p}$-newforms arising from
lower levels and we provide $\mathfrak{p}$-adic Drinfeld modular forms of level
greater than 1.
