The design is totally stolen from Ubiquity. I love Ubiquity so I'm not complaining but the Raskin clan should get some credit.
The design methodology goes way back. If you're in the Bay Area go to the Computer History Museum and inquire with a Mr. Ted Nelson. People have been singing this gospel for years and now that, "everyone's shit out of ideas" suddenly the Bigs get wise to, "humane UI patterns?" I don't buy it. Specifically summoning a text prompt with a UI short-hand is copyrightable; especially if you're Nintendo or Google or Apple. Go ask Larry Tesler if Ted Nelson isn't taking appointments.