Complex sentence: It was originally designed as an occasional five-minute "filler" to plug gaps between shows.Daily_Herald TV critic, wrote "I believe that is marks an important turning point in the BBC's attitude to its audience".
Split into simpler sentences: It was originally designed as an occasional five-minute "filler" to plug gaps between shows. A critic for the Daily Herald wrote "I believe this marks an important turning point in the BBC's attitude to its audience".