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COBOL assignments are already punishment enough without the professor's commentary. First they tell you to add comments, so you write "*> move A to B" which is literally just repeating what the code says in slightly different words. Then they hit you with the "explain WHY not WHAT" lecture, so you craft these beautiful explanatory comments about copying values around. The code went from self-documenting to over-documented faster than a mainframe processes a batch job. Nothing says "I understand good practices" quite like explaining why you're moving variables in a language where everything is already painfully verbose.