(Example: §, ½ or | on Scandinavian (Swedish, Danish, Norwegian etc), circumflex ( ^) on German keyboards, ² on French keyboards, \ or | on Italian keyboards, ` on Brazilian keyboards, ' on Turkish keyboards). The key is the top left key under escape, on non-U.S.
Other keyboards with different layouts will differ, but the key is usually to the left of 1, and just under the Escape key ( Esc). keyboards, and the not symbol ( ¬) on UK keyboards. The backquote key shifts to tilde ( ~) on U.S. To access the console, use the backquote key ( `) while in-game (Unpaused).