Macro to set angle readout precision and working units readout precision

When I record a macro it successfully captures and can regurgitate, effectively, an angle readout precision setting.

But the working units setting, quite analogous, is completely ignored. the macro contains nothing.

it would seem there should be a step corresponding to

 MbeSetAppVariable "DGNSET", "dgnSet.angleReadoutPrec", 9&

but there isn't. rather than guess, many times, what might be the name of

dgnSet.workingunitsReadoutPrec, .... ( 2 digits fewer than angle ..?!?!...)

can I find it documented somewhere?

F1 help doesnt know about it.

thanks

Jim