% example by wolfgang on the list

\defineenumeration
  [grouptest]
  [        title=yes,
            text={dummy text},
       titleleft=,
      titleright=,
     headcommand=\groupedcommand{[}{]},
   numbercommand=\groupedcommand{(}{)},
    titlecommand=\groupedcommand{<}{>}]

\starttext

\startgrouptest [title={dummy title}]
    \unknown
\stopgrouptest

\startgrouptest
    \unknown
\stopgrouptest

\blank[2*line]

\setupenumeration
  [grouptest]
  [number=no]

\startgrouptest [title={dummy title}]
    \unknown
\stopgrouptest

\startgrouptest
    \unknown
\stopgrouptest

\stoptext
