[1] Textbooks and informational texts contain important text features to help readers understand the information, such as boldface terms, photos, charts, glossaries, tables of contents, headings, captions, indexes, timelines, and maps. [2] These text features highlight important vocabulary, pack information densely, define terms, show relationships visually, and help readers efficiently find specific topics and ideas. [3] Paying attention to text features such as boldface terms, captions, previews, and headings can help readers comprehend informational texts more successfully and complete assignments more quickly.