Mark and his team at UW wrote pine and alpine, the mail client used by many (most?) US college students in the late 1990s.
They also wrote pico, the pine composer, predecessor of nano, and the most newbie-user-friendly text editor commonly found on Unix text console systems.
They also wrote pico, the pine composer, predecessor of nano, and the most newbie-user-friendly text editor commonly found on Unix text console systems.