thanks for the hint, but I don’t get it. How can I bind a signal to a heading? If I understand right a signal is a tag that can be attached to a macro …? So I’ve tried the following:
\newsignal\SpaceAfterSection
\def\TestSpace
{\ifdim\lastskip=\SpaceAfterSection \blank[nowhite]
\else \blank[2*big]\fi}
\setuphead[section] [after=\SpaceAfterSection]
\setuphead[subsection] [before=\TestSpace]
\starttext % \showgrid
\startcolumns
\section{Section}
\input tufte \par
\subsection{Subsection}
\input tufte \par \column
\section{Section}
\subsection{Subsection}
\input tufte \par
\input tufte \par
\stopcolumns
\stoptext
I appreciate your help!
Andreas
PS. I use only MkIV