Media Library
Details about using the media library and adding files and images.
The Media Library is an organizational tool for documents -- especially those that might get revised -- and images.
The Media Library is a separate content type that allows us to use and reuse all kinds of media, though we primarily use it for images and documents.
Each of the items added to the media library has an ID number (like everything else in drupal). You can learn the ID number by hovering your mouse over the download link: