The document provides definitions and explanations of different types of short functional texts, including brochures, advertisements, announcements, notices, diagrams, tables, and graphics. It explains that brochures and advertisements are used to promote or advertise something, while announcements are used to inform the public and notices are used to provide information, instructions, or warnings. Diagrams visually explain concepts using lines and boxes, tables present information in columns, and graphics show information as rising and falling lines.