% adapted from the ctx list

\defineenumeration
  [question]
  [text=,
   alternative=serried]

\defineitemgroup
  [abc]

\setupitemgroup
  [abc]
  [each]
  [a,horizontal,two,intro,nowhite]
  [stopper=,
   right=)]

\starttext

\startquestion
    \blank[overlay]
    \startabc
        \startitem \strut $ \int_a^b f(x)\,dx$ \stopitem
    \stopabc
\stopquestion

\startquestion
    \blank[overlay]
    \startabc
        \startitem \vrule height 2cm depth 1cm width 1mm\stopitem
    \stopabc
\stopquestion

\stoptext
