Ctrl

There are several commands in NetHack that use Ctrl key. Ctrl key allows sending some non-printable characters to NetHack.

Commands that use Ctrl

 * Press Ctrl to teleport.
 * Press Ctrl to kick something.
 * Press Ctrl to redo the previous command.
 * Press Ctrl to repeat previous messages.
 * Press Ctrl to quit game.
 * Press Ctrl to redraw screen.
 * Press Ctrl to show your attributes.
 * Press Ctrl to suspend NetHack.
 * Pressing Ctrl or Ctrl is equivalent to pressing ESC key (cancells commands).
 * Pressing Ctrl with direction key will move that direction untill you are near something.

Wizard mode
Several commands are available only in Wizard mode.
 * Press Ctrl to search a room.
 * Press Ctrl to map the level.
 * Press Ctrl to create monster.
 * Press Ctrl to identify all your items.
 * Press Ctrl to show locations of special levels.
 * Press Ctrl to levelport (pressing ? will show you menu with special levels).
 * Press Ctrl to wish for an object.
 * Press Ctrl to show your attributes and intrinsics.

Other

 * Ctrl acts in a same way as Ctrl
 * Ctrl and Ctrl are sometimes used to pause and resume terminal output. If NetHacks seems to stop respoding, try pressing Ctrl, especially if you use Screen program.