Start chatbox hidden
api.box.hide function is useful for when the chatbox has already loaded on a site and you wish to hide it again. For example, when the visitor clicks a particular button.
You would use
box.start_hidden when you don’t want the chatbox to show at all when the page loads. If you used
api.box.hide to hide the chatbox when the page loads, a visitor might see the chatbox appear briefly, before the API call was read.