\environment columnsets-000

\definecolumnset[example][n=4]

\starttext

\startcolumnset[example]

   1:         \fakewords{50}{75} \column
   2: []      \fakewords{50}{75} \column[yes]
   3: [yes]   \fakewords{50}{75} \column[page]
                                 \column[page] % redundant
   4: [page]  \fakewords{50}{75} \column[3]
   5: [3]     \fakewords{50}{75} \column[4]
   6: [4]     \fakewords{50}{75} \column[first]
   7: [first] \fakewords{50}{75} \column[last]
   8: [last]  \fakewords{50}{75} \page
   9: (page)  \fakewords{50}{75} \page
                                 \page % redundant
  10: (page)  \fakewords{50}{75} \column[3*5]
  11: [3*5]   \fakewords{50}{75}

\stopcolumnset

\stoptext