\setuppapersize[letter][letter]

\setuplayout[height=fit,grid=yes]
\showframe

\usemodule[newcolumnsets]
\definecolumnset[colset][n=2]

\starttext
\startcolumnset[colset]

\section{One section}

\dorecurse{16}{\input ward \par}

\placefigure[page]{Legend. \input ward }{\externalfigure[dummy][width=\makeupwidth,height=15cm]}

\section{Two section}

\dorecurse{2}{\input knuth \par}

\section{Three section}

\dorecurse{6}{\input knuth \par}

\stopcolumnset
\stoptext
