On Sat, 17 Oct 2009, Janneman wrote:

> \definehead[paragraf][section]
> \def\mynumbercommand#1{\bf{\S} #1 --}
> \setuphead[paragraf][numbercommand=\mynumbercommand,alternative=inmargin]
>
> \starttext
>
> \paragraf[ref]{TEST}
>
> \input tufte
>
>
> \stoptext

Another option:

\definehead[paragraph][section]
\setuphead[paragraph][alternative=inmargin]

\setuplabeltext[paragraph={{§ },{ –}}]

\starttext

\dorecurse{5}
{\paragraph{A repeated quote}
\input knuth \endgraf}

\stoptext