@ kytta One of my most used man pages.

Neat thing to notice if you look at the tables. If you know that control+G rings the bell. And maybe you've seen people use control (or caret) H to represent backspace. Or if you open a DOS formatted file in a unix editor you get caret M at the end of the line for the carriage returns. Look how those non printiable charactors line up with the alphabet in the table.