You can display different data by using different display modes. These specialized modes make it easier to navigate the relevant pieces of information, such as files and directories, or buffers.
In the main menu, found by clicking mouse-3, there is a submenu labeled ‘Displays’. This submenu lets you easily choose between different display modes.
The contents are modes currently loaded into emacs. By default, this would include Files, Quick Buffers, and Buffers. Other major display modes such as Info are loaded separately.