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.
I think that is is best to sit pretty close to the computer, i sit about 10-15cm away from the monitor otherwise my eyes get pretty sore, and everything is blury. My eyesight is so-so, but hasnt got worse in a few years. Most of my friends sit like this too, seems to be the best distance on a 17 screen.