st_units.RdSee the units argument to stable(). Units can be passed either as
name=value pairs or as a named list with st_args(). Units can
alternatively be passed as an argument to stable() as a pre-formed, named
list using st_args(). Passing as an argument this way will overwrite units
specified with st_units(). It is recommended to use either st_units() or
st_args() but not both.
st_units(x, ..., parens = TRUE)an stobject
named items of the form COL = unit or a named list
of units
if TRUE, parens will be added to any unit whose first
character is not (