\environment columnsets-000

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

\definecolumnsetarea
  [one]
  [type=both,
   x=1,y=1,nx=2,ny=6,
   background=contrast,
   state=repeat]

\definecolumnsetarea
  [two]
  [type=both,
   x=4,y=10,nx=1,ny=6,
   background=contrast,
   state=repeat]

\starttext

\startcolumnset[example]

  \dorecurse{40}{\fakewords{50}{100}\par}

\stopcolumnset

\stoptext