 The series featured "Picture Picture", a rear-projection motion picture and slide projector, whose screen is encased with a picture frame.In early episodes, Picture Picture would show various films or slides at Mister Rogers' command; after the material was presented, Mister Rogers would thank Picture Picture, to which it would return a "You're Welcome" on its screen.After 1970, Picture Picture no longer operated magically, becoming merely a projector; Mister Rogers would insert a film, slides or videotape through a slot on the side, then show the material using a wired remote control.