Hi all I found an issues with number of formula in latest beta (MkIV) example： \setupenumerations [formula] [way=bysection, prefix=yes, prefixsegments=chapter:section] \starttext \chapter{one} \section{one} See formula \in[eq:3] \section{two} \placeformula[eq:3] \startformula f(x)=x^3 \stopformula \stoptext 1. missing a dot in the number of formula. I must add "\defineenumeration[definition][text=Definition]" change"\setupenumerations[definition,formula][...]" and use once \startdefinition some text \stopdefinition before the "\placeformula" 2. in cross-reference,it was missing the section number the problem the same in "\setupnumber[formula]" example: \setupnumber[formula][way=bysection,numbersection=yes,prefix=yes,prefixsegments=chapter:section] \starttext \chapter{one} \section{one} See formula \in[eq:3] \section{two} \placeformula[eq:3] \startformula f(x)=x^3 \stopformula \stoptext -- Best regards, Huang Ze