This: \defineblock[question] \defineblock[answer] \defineenumeration[question][text={Question}] \defineenumeration[answer] [text={Answer}] \keepblocks[question] \hideblocks[answer] \def\mynewcommand{\dosingleempty\doMyNewCommand} \def\doMyNewCommand[#1]#2{% \iffirstargument \beginquestion \startquestion #2% \stopquestion \endquestion \beginanswer \startanswer #1% \stopanswer \endanswer \else \beginquestion \startquestion #2% \stopquestion \endquestion \incrementcounter[answer] \fi } \starttext \chapter{Question} \beginquestion \startquestion Question 1. \stopquestion \endquestion \beginanswer \startanswer Answer 1. \stopanswer \endanswer \beginquestion \startquestion Question 2. \stopquestion \endquestion \beginanswer \incrementcounter[answer] \endanswer \beginquestion \startquestion Question 3. \stopquestion \endquestion \beginanswer \startanswer Answer 3. \stopanswer \endanswer \mynewcommand{Question 5} \mynewcommand[Resposta 6]{Question 6} \chapter{Answers} \useblocks[answer] \stoptext does not work