In a desert-like piece of Pascal code, devoid of any real oases of comments, with single-letter variable names throughout, and naturally lacking any proper documentation, I came across a lonely comment
(* Wulf *)
And no, that wasn't the culprit's name. If he is reading this column, he will know I am talking about him. Having said all this, I could by dint of quite some effort make sense of his code (which algorithm-wise and structurally was fine), but I can still recognize those bits of code I contributed to that system after decoding his work: My variable names grew longer, my comments more detailed, my documentation actually existed!