The CW is the only major network that operates a fully programmed alternate feed for smaller markets, The CW Plus (a successor to The WB's group of cable-only affiliates, The WB 100+ Station Group, which launched in September 1998 to provide the network's programming to markets where it would otherwise not be able to gain adequate over-the-air coverage), which, as a cost-effective method that reduces programming responsibilities on prospective affiliate stations, fills airtime not occupied by CW network programming with syndicated programs and infomercials; The CW Plus is distributed via digital subchannel and cable-only affiliates, making it also one of the only networks that has local affiliates that do not broadcast over-the-air.