I am trying to define an itemgroup to list the answers for multiple choice questions. When I try to change the stopper using the option stopper=), the list changes from an alphabetical one to a bulleted list. Please see the difference between "choices" and "options" below. \defineitemgroup[choices][levels=1] \setupitemgroup[choices][1][a,packed] \defineitemgroup[options][levels=1] \setupitemgroup[options][1][a,packed,stopper=)] \starttext \startchoices \startitem This is choice 1. \stopitem \startitem This is choice 2. \stopitem \stopchoices \startoptions \startitem This is option 1. \stopitem \startitem This is option 2. \stopitem \stopoptions \stoptext Q. How can I change the stopper in this itemgroup.