Where can I learn about a) refinement and b) :reduce tasks? I mean other than the <http://www.onyxplatform.org/docs/user-guide/latest|user-guide> and in the <http://www.onyxplatform.org/docs/cheat-sheet/latest|cheat-sheet>.

@lutz.buech i think :reduce was introduced fairly recently and is not yet documented, but it uses the same interface as regular windows, except it doesn't require a :fn

you can take a look at the onyx-examples or learn-onyx repos