I learned APL at the Hampshire College Summer of Mathematics in 1979. We programmed using the full character sets with overstrikes and everything. I still remem

I learned APL at the Hampshire College Summer of Mathematics in 1979. We programmed using the full character sets with overstrikes and everything. I still remember the Domino Operator (matrix divide, represented by a box character overstruck with a ÷ character. Those were the days