Use the Articles panel, introduced in InDesign® CS5.5, to provide an improved reading experience in accessible PDFs. Choose and organize your content by dragging images, text frames, and other content into the new Articles panel to define the order in which they'll export. You can control the sequence of text, images, and graphics in the exported document, ensuring it is optimized for accessibility.

Articles provide designers and production artists an easy way to create relationships among page items. These relationships define the content to be used while exporting to ePub, HTML or accessible PDFs; and to define the order of the content.

You can create articles from a combination of existing page items within a layout, including images, graphics, or text. Once an article has been created, page items can be added, removed, or re-ordered. While articles can be created manually by dragging one or more page items to an article in the Article panel, there are also mechanisms for adding bulk content to an article, including adding all selected content to an article, or adding an entire document to an article.

The Articles panel is designed to be simpler and easier to use for people without XML skills. However, the ability to use the XML Structure panel has NOT been removed, but is now an additional option that complements the use of the Articles panel during the export process.

InDesign Articles panel