The interactive events are very similar to standard CSS selectors that developers use to style the look of elements on a page or assign functions to them in JavaScript.
UseItBetter event consisting of a selector and event type click:
div[1]#checkout/a[1].button.continue.click
CSS selector example referring to the same element:
div#checkout > a.button.continue { background: green; font-weight: bold; }
JavaScript example using jQuery to assign the element a behaviour for click event:
$('div#checkout > a.button.continue').on('click', function(e) { // do something on click });