I made use of descriptions in mkii. For example: % Define the intro for the annotation % Block opened on \startquestion and closed on \stopquestion % \startannotation{} ... \stopannotation; {} required \definedescription[annotationblock][% \c!margin=\v!no,\c!location=\v!top,\c!width=\v!broad,% \c!headstyle=\@@exmintrostyle,\c!style=\@@exmstyle,% \c!before=,\c!inbetween=,\c!after=,% \c!text=\placeannotationstart] etcetera The error message in latest context beta is: ! Use of \@@startdescription doesn't match its definition. \doifnextoptionalelse ...\nextoptionalcommandyes { #1}\def \nextoptionalcomma... \setuptextrules ...odoubleargument \getparameters [\??tl ] \placeannotationstart ...aloffset \setuptextrules [\c!style = \@@exmintrostyl... \dododescriptioncomponent ...onparameter \c!label }\xdef \currentdescription... \@@makedescription ...},\c!bookmark =,\c!list =][] \@@dostartdescriptionindeed \dodogotopar ->\@@makedescription []{} \BeforePar \emptytoks ... Can someone tell me if it is known to be broken in mkiv? Before delving too deep in the code myself.... Hans van der Meer