The document discusses how soap operas establish a distinctive brand identity through their opening sequences. It explains that iconic theme music immediately identifies the soap, as does imagery like the Thames that establishes the London setting of EastEnders. Logos shown in the opening also identify the broadcasting institution, like the BBC logo. Details in imagery can indicate the time period being portrayed, as seen by including a reference point like the O2 arena built in 2000. Repetitive, dull theme tunes can shape assumptions that the characters' lives will similarly lack excitement or variation.