I want to add objects to my epub, that save their "state" after the epub is closed and reopened. For example, a button is tapped, which changes the color of another object from red, to blue, to green. Is it possible to make the object "save" its state after the epub is closed?
In other words, when my son opens the epub, and taps the button, the shape will change from red to blue. Is there a way to make the object "save" its state so that when he reopens the epub, the shape is still blue (and does not revert back to its default state of "red").