healUnits [(<group-list> <proportion> | <unit-list>)]
With no arguments, this will restore all lesioned units in the network. With just a unit-list, it will restore the given units. Otherwise, it will restore the given proportion of lesioned units in the given groups.
To heal all lesioned units in group "output":
lens> healUnits output 1.0
To heal just units "output:3" and "output:5":
lens> healUnits {output:3 output:5}