Toggles the popover when the anchor is clicked. An arrow key opens it.
Shows the popover shortly after the anchor is hovered or focused and hides it when the anchor is no longer hovered or focused.
Toggles the popover as soon as the mouse is pressed on the anchor, so it can be dragged over the popover's contents and released on one of them. Keyboard clicks and arrow keys also work.
The interaction on the anchor element that shows and hides a popover.