The document discusses the common codes and conventions used on magazine covers. It notes that magazine covers typically feature a masthead in a unique font, a celebrity endorsement, cover lines describing the magazine's contents, a limited color scheme, barcodes, positioning statements indicating the magazine's genre or target audience, and splashes of bold color or images. The positioning of these design elements is also standardized, seeking to attract readers' attention through the prominent placement of the masthead, cover lines, celebrity photos, and other graphics.