> On 18-12-2015, at 10:44 AM, Nicolai Hess <nicolaihess at gmail.com> wrote: > > SubstructureRedirectMask | SubstructureNotifyMask Excellent; works on my Pi! tim -- tim Rowledge; tim at rowledge.org; http://www.rowledge.org/tim Useful random insult:- IQ = dx / (1 + dx), where x = age.