The document discusses how to use external data sources, web objects, and data objects in Site Manager. It provides information on: 1) What external data sources, web objects, and data objects are and how they can be used to add external content to a site. 2) How to configure web objects to pull in content from external URLs and follow links on those pages. 3) How to configure data objects to retrieve and display specific data from external databases or RSS feeds when content is published. 4) Examples of implementing web objects and data objects in templates.