Knuth mentions Floyd teaching an intro CS class at Stanford (CS106). At least one of those times, Floyd taught using SAIL macros and didn't much mention functi

Knuth mentions Floyd teaching an intro CS class at Stanford (CS106). At least one of those times, Floyd taught using SAIL macros and didn't much mention functions/procedures. (SAIL macros are syntactic and look a lot like procedures/functions, but the order of evaluation can be surprising.) This caused a bit of trouble when those students went on. Floyd was a serious Dig Dug player. (DD is an early arcade video game.)