A study at Hitotsubashi University describes a meeting between Prime Minister Satō Eisaku and President Richard Nixon. Shaking hands, Satō clearly promised Nixon that Japan would restrain its textile exports to the United States by the end of the year. Satō later said that there was no paper, and that he had never promised anything concrete, even orally.
A popular version of the story says that Satō answered zensho shimasu (I will deal with it appropriately), and that Nixon took this as a commitment. No source for that wording was found.