<context mode=mkiv source=yes>
\setuppapersize[A10][A7,landscape]
\setuppaper[nx=4, ny=2]
\setuplayout[location=middle,marking=on]
\setuparranging [XY]
\definefontfeature [textfigures] [onum=yes]
=More Registers=
<{{cmd>|index</cmd> }} is only one special case of <cmd>{{gen|register</cmd>}}. You can define as much different registers as you like:
<{{cmd>|defineregister</cmd>}}<tt>[singular name][plural name]</tt>, e.g.
<texcode>
\defineregister[mouse][mice]