Voice narrations are beneficial when producing self maintained presentations or displaying your presentation on the Internet. Like sound, this feature can only be used if your computer is equipped with a sound card, speakers, and a microphone. When using voice narrations it is helpful to know that narrations will override sound; therefore if you have designated sound to that slide previously, it will be overridden. The narration feature allows you to check microphone level and the quality of the sound. You may also link a narration to the slide as well which is shown in this lesson.