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Thanks Wolfgang and sorry if i reply to my mail, since i've downloaded yours on another PC. I've found these macros in strc-reg.mkiv, that are called right before and after the page numbers: \unexpanded\def\startregisterpages {\begingroup \dostarttagged\t!registerpages\empty \useregisterstyleandcolor\c!pagestyle\c!pagecolor} \unexpanded\def\stopregisterpages {\dostoptagged \endgroup} And this seems to work: \let\origstartregisterpages=\startregisterpages% \let\origstopregisterpages=\stopregisterpages% \unexpanded\def\startregisterpages{\origstartregisterpages\wordright\bg roup } \unexpanded\def\stopregisterpages{\egroup\origstopregisterpages} \setupregister[index][n=1,alternative=A] \starttext \CONTEXT\index{\ConTeXt} \page \LATEX\index{\LaTeX} \page \CONTEXT\index{\ConTeXt} \page \placeindex \stoptext I've also learned about \groupedcommand, which i did not know. Again, thanks for you help. Best wishes, Massi