A computing device with a display displays a first portion of an electronic document in a presentation mode of an electronic document authoring application. The first portion of the electronic document includes predefined activation regions for a plurality of presentation emphasis objects. While displaying the first portion of the electronic document the device detects a first input by a user on a respective predefined activation region for a first presentation emphasis object in the plurality of presentation emphasis objects. In response to detecting the first input on the respective predefined activation region for the first presentation emphasis object, the device: selects a first emphasis animation for the first presentation emphasis object based on the first input; displays the first emphasis animation; and displays the first presentation emphasis object.