The front page is the most distinct feature of the newspaper format. It was invented 300 years ago, and has changed little since then. Without exception, industry predictions of the future of the newspaper include a front page. The upper part of the front page is covered by the nameplate that carries the newspaper's name. Traditionally, the nameplate is positioned at the top of the page, centered, and often set in an old font type that reflects the dignity of the medium. The area below the nameplate is dominated by the headlines of the most important stories. The size of the headline font reflects the relative importance of an article. The article itself is printed under the headline. Since American newspapers put more articles on the front page than there is room for, only the first part of the article is printed. To read the last part, the reader must jump to an inside page. The articles are laid out in columns of fixed width. This makes line lengths shorter than e.g. in books, and leading can be reduced since the horizontal retrace is shorter and easier to follow for the human eye. These factors make it possible to put more text on each page. The fixed width of the columns also makes it easier to tile articles of different size and shape. While the front page contains articles from several categories, inside pages are more specialized. Main categories have their own section, such as sport and business. Within these sections are found additional detail, related topics, and juxtapositions.