There was an APL keyboard.
And, the APL interpreter/compiler was weird. if you typed an F followed by a backspace, followed by an L, it would merge those into an E, as if they were typed on top of each other, like a typewriter.
And, the APL interpreter/compiler was weird. if you typed an F followed by a backspace, followed by an L, it would merge those into an E, as if they were typed on top of each other, like a typewriter.