Hi! I'm struggling with the rendering of a particular liquid metal: %% renders as m (meter), not as Hg \unit{mercury} %% renders as mm·m, not as mmHg \unit{millimetermercury} This is strange, since both “mercury” and “millimetermercury” are defined in phys-dim.lua. To get mercury recognised as a unit this can be used: \registerunitshortcut [mercury=mercury] Now \unit{mercury} renders correctly as Hg. Why is that \registerunitshortcut necessary? Is it even correct to use it like this? However, even then millimetermercury doesn't render correctly: %% renders as mm·Hg, not as mmHg \unit{millimetermercury} How to get millimetermercury render as mmHg? And “inch mercury” render as inHg? I can't find “inchmercury” in phys-dim.lua, only “millimetermercury”, should it be added? Example: %% \enabletrackers [physics.units] %% inch should render as “in” %% \setupunittext [inch=in] \starttext \unit{mercury}\crlf %% renders: mm · m \unit{12 millimetermercury}\crlf %% renders: mm · m \unit{12 inchmercury}\crlf %% renders: in · m %% why is this necessary to get mercury rendered as Hg? \registerunitshortcut [mercury=mercury] \unit{12 millimetermercury}\crlf %% renders: mm · Hg \unit{12 inch mercury}\crlf %% renders: in · Hg \stoptext Questions: 1) Why is \unit{mercury} not working, although it's listed in phys-dim.lua? 2) Is the call \registerunitshortcut [mercury=mercury] necessary/correct? 3) How to make \unit{millimetermercury} render as mmHg and \unit{inch mercury} render as inHg? Marco