For those unversed with the technicalities of tv/cable programming lingo, promos indicated promotional material utilized by a tv/cable channel to drum up interest in that station's programs, with the plug for their channel being ever-present. Bumpers were short segues to and from a show also courtesy of the channel. Station IDs prominently showed the channel and served to show/remind you what channel you were watching.
Good ol' Casey Kasem!
Or ratings bumpers or "coming next" clips for cable!
Have at it, tv/cable lovers!