Each page consists of 5 major components. These are the header and footer , right and left margins , and the body of text. The body is defined by the other four. You generally will have control over line spacing of the document. Single spacing is the rule of thumb.
Justification is the description of how text appears on the page.
There are four basic forms of justification. The most often used in correspondence is left justified . The opposite, right justification , is used for special effects in poetry and occasionally to format tabular information when table functions are cumbersome. Most papers, articles, and books are fully justified . The text is adjusted so that both margins line up.