@tlayoyo

Back in the stone age (1978-ish), I had to submit my code to a punch-card operator. I had to explicitly state at the top of every sheet that 'slashed' meant 'zero' and 'unslashed' meant 'alpha' 🙂

@tlayoyo

You know what I mean. Alphabetical letter O as opposed to a numerical '0'.

Or did I miss a funny? Hey ho...