The document analyzes codes and conventions used in magazine advertisements. It notes that ads typically use 2-3 dominant colors in a color scheme, include a studio photo of the product being advertised, have a neat layout with plenty of white space, place the largest text for the product name, and include contact information like email addresses and social media links. By following these conventions of color scheme, central photo, clean layout, prominent text, and contact details, ads can clearly communicate what they are advertising and make it easy for readers to learn more.