Common word processor functions of bold, italicize and underline text can help viewers recognize important words and phrases. Research has found that the contrast that exists between yellow and black is greater than the contrast between black and white, making items highlighted in yellow much easier for most people spot and recognize. Since web use has become very common, it is advisable to be sparing in the use of the underline and limit it to URLs and references only, so that underlined words will not be interpreted as hyperlinks. Fonts should be clear and simple to read. Multimedia is the combination of more than one form of media together to create a more powerful message.
Multimedia is an excellent way to enhance a presentation.
Graphics, sound, video, animation, and charts can all add to the message. Multimedia files should be kept small, since they will have to load into the presentation computer s RAM before being displayed and therefore may cause delays or pauses in the presentation. Additional media should be added to a presentation when they improve the quality, increase the impact of the message, or present information better than text alone. No image or sound should be included in a presentation just because it exists or it is possible to do so. An image or sound that has no bearing on the presentation can be more distracting than helpful.