Dear Wolfgang, To use the option "title=yes" in enumeration, I have encountered a unwanted result. It display the first letter as a title when I didn't put title. Would you please check the following code? \setupenumerations[location=serried,width=broad,distance=0.5em] \defineenumeration[theorem][text=Satz,title=yes] \defineenumeration[corollary][counter=theorem,text=Korollar] \starttext \starttheorem[title={Pythagoras Theorem}] The square on the hypotenuse is equal to the sum of the squares on the other two sides. \stoptheorem \starttheorem{Pythagoras Theorem} The square on the hypotenuse is equal to the sum of the squares on the other two sides. \stoptheorem \starttheorem %no title is suggested The square on the hypotenuse is equal to the sum of the squares on the other two sides. \stoptheorem \startcorollary The sum of angles of a quadrilateral is 360 degrees. \stopcorollary \stoptext Thank you. Best regards, Dalyoung