[NTG-context] space between number and units in \unit

Dear Context folks, Could I request a parameter in \setupunits to control the space between the number and the units that is placed by \unit{}. In phys-dim.mkiv it looks like there is an intention to do so (parameter "space") but it's commented out. I actually would like about half the space that I currently get, but others may want none, or more. Thanks, Robin \starttext \unit{35 kilogram cubic meter} \setupunits[unit][space=big] \unit{35 kilogram cubic meter} \setupunits[unit][space=small] \unit{35 kilogram cubic meter} \stoptext