A common feature of educational multimedia, particularly those which are designed to encourage or teach reading and language skills, is text which is highlighted in time with a narration. Creator includes a special function that does this automatically for you. It is called AutoNarrate and can be added to a particular piece of text and then played using an action.
Note:
The new tween animation object provides a more versatile way to perform narration highlights but the animation has to be created manually.