Parsability: You can take in only so much information in one eyeful. Well-used formatting breaks a mass of unparsable information into eye-sized chunks. White space (between paragraphs, tabs, spaces, margins, and so on) is the main type of formatting that you use to segment information, sometimes in combination with typographic elements, such as with an indented bulleted or numbered list. A well-formatted presentation moves your eye quickly and naturally from area to area.