[NTG-context] Adding line numbers to all pages?

Dear All, Is there a simple way to add line numbers to the margin of each page of a document? They should recommence at 1 on every page, and either omit formulas or handle them “gracefully”. I’d be happy to have any ad-hoc solution. Thanks, Matthias \starttext \input tufte \startformula 1+1=1 \stopformula \input knuth \input tufte \startformula 1+1=2 \stopformula \input knuth \input tufte \startformula 1+1=3 \stopformula \input knuth \stoptext