xhkeys allows you to assign an action to any key that is otherwise
unused in X (such as the "menu" key on a 105 key keyboard, extra keys
on some keyboard models, or odd keys on laptops). The action assigned
to a key or key combination (key and modifiers) can be a builtin
operation, a call to an external application, the sending of a key
event (simulating a key press/release), or the sending of a mouse
button event (simulating a button press/release).
It also features plug-in support and on-screen display.
