Two Page controls
This page uses two control PageContent usercontrols. This control, the top one, has the following parameters set to true:
Setting this to true embeds the metadata (keywords, page title and description) associated with this content into the document header.
Underneath this truly horrible animiated gif, you should see the content for the second control. Don't get me started on animated gifs, they are just soooo 1995. Just feel happy its doesn't say "under construction"..
The bottom control
This control has the EmbedMeta and EmbedTitle properties set to false, otherwise the meta data for this control would be added to the page as well, resulting in two sets of metadata in the header, definately not a good thing.
Setting this to true embeds the metadata (keywords, page title and description) associated with this content into the document header.
The different areas of content are displayed using the Page_ID property. You can get the page_id for a content element in the CMS under the page listings for 'general content'.