narrowTo
Selects the next most narrow selection that contains all of a given unit type.
Arguments
unit: the name of the unit type to narrow to; see Motion Unitsboundary: the boundaries to narrow to; eitherstart,end, orboth.then: if there is no unit of the given type to narrow to, the command can attempt to narrow to a second unit type, specified here.thenBoundary: the boundaries to consider forthen; one ofstart,end, orboth.