\definecolumnset [example-1] [n=2,balance=yes]
\definecolumnset [example-2] [n=3,balance=yes]
\starttext \showgrid
\setupcolumnsetlines[example-1][1][1] [8]
\setupcolumnsetlines[example-1][1][2][10]
\setupcolumnsetstart[example-2][1][1][29]
\setupcolumnsetstart[example-2][1][2][29]
\setupcolumnsetstart[example-2][1][3][29]
\startcolumnset [example-1] \dorecurse {1}{\input tufte \par} \stopcolumnset
\startcolumnset [example-2] \dorecurse {2}{\input ward \par} \stopcolumnset
\stoptext

