[NTG-context] (again) references to sections in registers

Dear list, I have the following sample: \starttext \chapter{Chapter} \section{Section} \index{one} \subsection{Subsection} \index{two} \placeindex \stoptext How can I do the following? - "one" is referred in the index to 1.1. - "two" is referred in the index to 1.1.1. I mean, how can we get sectioning references instead of page references in registers? Many thanks for your help, Pablo -- http://www.ousia.tk