Drupal Lite 7: Types of Content in Your Drupal Lite Site
There are three categories of content on your site:
Content Type Pages are the webpages that make up your site. They are created using the Add Content button in the Administration Toolbar. All of this content can be found using the List Content button on the Administration Toolbar.
Additional Content Added to a Page are content panes that are added to pages using the Customize This Page tool. This content will not be listed on the List Content page.
Files and Media are items that have been uploaded to your Drupal Lite site. Examples include images, documents, sound files, etc. All of this content can be found on the List Content page.