From the wrapping a univeral remote I recently bought: "Controls VCR/DVD combos, TV/VCR combos, and TV/DVD combos!"
This is because it controls two devices, and those are the three types of device that people have. But I guess "controls two devices" doesn't work from a marketing standpoint, so they have to list all 3-choose-2 subsets. (And I also find elsewhere on the packaging "manage up to 8 separate devices with one remote control". Something doesn't add up here.)