It is used to present the main points or topics of a given subject, often used as a rough draft or summary of the content of a document. Preparation of an outline is an intermediate step in the process of writing a scholarly research paper, literature review, thesis or dissertation.
The center of the computer monitor should normally be located 15 to 20 degrees below horizontal eye level (Figure 6). The entire visual area of the display screen should be located so the downward viewing angle is never greater than 60 degrees when you are in any of the four reference postures.
Another cause of computer eye strain is focusing fatigue. To reduce your risk of tiring your eyes by constantly focusing on your screen, look away from your computer at least every 20 minutes and gaze at a distant object (at least 20 feet away) for at least 20 seconds.