[NTG-context] clubs and widows in columns

Dear list, is there a way to avoid clubs and widows in columns? I don't know, how it would be implemented, if the task is splitting typeset vertical list. \setuppapersize[A7] \starttext \startcolumns[separator=rule, align={right,nothyphenated}] \dorecurse{12}{→ one two three four five\par} \stopcolumns \stoptext For a different task: are there some higher level commands in ctx than \vsplit primitive to play with vbox splitting? Thank you, Jano