Press shift+a and there should appear some text below. Pressing it once again should not fire the event because of the :once pseudo.

keydown:keys(shift+a):once

click:relay(p.clickmeOnce):once

Clickme :once

click:throttle(1000)

:throttle(1000) - Click me quickly after each other. Event should fire 1 time / second

keydown:pause(300)

Type something in the input field. The event should only fire once you have not typed for 300 ms