Article Title

` | Self-contained content | Blog posts, news articles, forum posts | | `

` | Thematic grouping | Chapters, sections with headings | | `

` | Navigation links | Primary nav, breadcrumbs, pagination | | `

` | Tangential content | Sidebars, pull quotes, ads | | `

` | Primary page content | One per page, excludes headers/navs | | `

` | Introductory content | Page header, article header, section header | | `

Introduction