\starttext

    \setuplistalternative
      [c]
      [filler=symbol,
       symbol=\hbox to .25em{\periodcentered},
       symcolor=darkred,
       symstyle=\bf]

    \startsubject[title=Contents]
        \placelist[section][criterium=all,alternative=c]
    \stopsubject

    \startsection[title=D. Ward]
        \input ward
    \stopsection
    \startsection[title=E.R. Tufte]
        \input tufte
    \stopsection

\stoptext