Newspaper articles follow certain conventions to effectively communicate information to readers. First, all articles are formatted in columns for easy reading. The most important information is placed at the beginning since some readers only read the first part. Within an article, the headline catches the reader's attention while the byline credits the author. The lead paragraph summarizes the story for quick readers. Main body paragraphs then provide the details, with key facts at the top in case readers do not finish the article. Other newspaper features include the masthead for identification, photographs to illustrate stories, and various sizes of headlines, advertisements and stories based on their importance.