Line up in sequence/behind
To settle a small flightdeck discussion would any knowledgable ATC whizz confirm that a clearance to "Line up in sequence ( or behind) the departing XYZ" clears the so-cleared aircraft to cross the holding-point line and progress toward the runway. Obviously this allows expeditious traffic departures particularly when a crossing pair of runways is in use for landings and takeoffs as in BCN.
Thanks in anticipation for definitive solution!