sentences:  It deals with the discontinuance of certain broadcasting services by analogue means and confers additional functions on RTÉ, the Broadcasting Commission of Ireland (BCI) and Teilífis na Gaeilge (TG4) to confer power subject to license on Telífis na Gaeilge and amends the Broadcasting Authority Acts 1960 to 2001 and certain other enactments and related matters.Some definitions are used in the Act such as multiplex, programme material, sound broadcasting multiplex, television multiplex and television programme service contract.These warrant further explanation, as terms frequently referred to hereafter.