This is bold italic. This is underlined . Brightly colored text can have a particularly strong impact . Blinking text is an effective way of attracting attention, but a very poor way of conveying complex messages. By far the most important consideration in page layout is spacing .
Readers love and crave white space.
You may wish to vary the line spacing intermittently to reduce monotony or to highlight a particular section. Headings and sub-headings . Like newspaper headlines, these devices not only break up the cluttered look of a gray page, but also assist the reader by indicating main sections or sub-sections of a document. As a rule, anything that increases white space also enhances a document's appearance and readability. Indents add white space and give shape and definition to a paragraph.