Thanks Wolfgang! Your source code looks a lot different than mine... there are some commands I have not seen before... so I have to learn :-) Unluckily I still get an error message: ! Use of \startPARA doesn't match its definition. l.21 \startPARA[ heading={lorem ipsum},mark=test] What did I wrong? ------------8<-------------- \definenumber[PARANUMBER][way=bysection,prefixsegments=100] \unexpanded\def\startPARA {\dosingleempty\dostartPARA} \def\dostartPARA[#1]% {\getrawparameters[PARA][heading=,mark=,#1]% \incrementnumber[PARANUMBER]% \inothermargin{\tfx\getnumber[PARANUMBER]~}% \doifsomething\PARAheading{\inmargin{\PARAheading}}% \doifsomething\PARAmark {\textreference[\PARAmark]{XXX/\rawnumber[PARANUMBER]}}% \ignorespaces} \unexpanded\def\stopPARA {\blank[medium]} \starttext \chapter{Alter novom} \startPARA[heading={lorem ipsum},mark=test] Lorem ipsum ... \stopPARA \startPARA Lorem ipsum \in[test] \stopPARA \stoptext