\environment columnsets-000

\definecolumnset[example][n=4,page=left]

\setupbackgrounds[text][text][background=contrast]

\definecolor[fakerulecolor][white]

\setupcolumnset[example][width=.15\makeupwidth]

\starttext

\startcolumnset[example]

  \dorecurse{25}{\fakewords{100}{150}\par}

\stopcolumnset

\stoptext