[NTG-context] too much space because of margin notes

Hello, I would like to write a note in the margin next to some framed formula, but I guess that the formula starts a new paragraph and there's too much space left on the top of the frame. How can I fix that? \starttext \startframedtext \inmargin{some text in margin} \placeformula \startformula a+b=c \stopformula How can I get rid of that space? \stopframedtext \stoptext Thank you very much, Mojca