[NTG-context] \next<enumeration>

Is it known, that this works in mkii, but not in mkiv. \defineenumeration[theorem][way=bysection,location=top,text=Theorem] \starttext \starttheorem foo \stoptheorem \nexttheorem \startsubtheorem foo \stopsubtheorem \stoptext ! Undefined control sequence. system > error on line 5 in file 04-02-3.ctx3: Undefined control sequence ... 1 \defineenumeration[theorem][way=bysection,location=top,text=Theorem] 2 3 \starttext 4 \starttheorem foo \stoptheorem 5 >> \nexttheorem 6 \startsubtheorem foo \stopsubtheorem 7 \stoptext TeXLive 2010 Herbert