com.umlet.element.base.Relation350200110120r2=Observer r1=Subject20;100;90;20com.umlet.element.base.UseCase11080470280lt=. Flightcheck :Spectator --com.umlet.element.base.Relation240200110120r2=Observer r1=Subject90;100;20;20com.umlet.element.base.Class20019010030lt=. Boardticketcom.umlet.element.base.Class40019010030Boardinglistcom.umlet.element.base.Class29030012030Flightlist