Am 13.10.2014 um 23:42 schrieb Andrea Valle <valle@di.unito.it>:

thanks Wolfgang,
see the “indent” section here:
http://smad.jmu.edu/shen/webtype/indent.html

\setupindenting[yes,medium]

\starttext

\input knuth

\section{Knuth}

\input knuth

\stoptext

Wolfgang