 An opt-out is the process of a regional entity inserting its output into a tributary of an otherwise complete national broadcast distribution feed, creating a local variation in output.Being a non-commercial broadcaster, the BBC has no need to play out local commercial spots, thus a regional node will typically only output programme material during the local news.Rather than each region having to control or monitor output that is being relayed from a central source, the region will step back from the network, allowing the central source to directly feed its transmitters.