Zarf dug up this gem of a photo, which suggests some wonderful images of astronauts struggling with early IF parsers (I'm sorry, I don't understand the word "hatch.") As well as being a teenage RPGer I also programmed IF on a Sinclair Spectrum (which only boasted 42k more RAM than the 1966 Apollo 11 PC – anomalous to Moore’s Law, maybe). Zarf is right, I think; there is something powerful and flexible in this restrained, 2D interface. Perhaps it’s time for the return of verb noun IF (set on a rocket flying to the moon).