This document discusses the codes and conventions used in Channel 4 documentary advertisements. It notes that the Channel 4 logo is typically in the center or top right of the advertisement. Documentary titles, air times, and taglines are always included. A dominant landscape image relates to the documentary's content. Minimal editing is used to keep the focus on the message. Advertisements tend to use simple Photoshop and include limited text at the bottom of newspapers. The Channel 4 font and logo are consistently featured.