When you click on a filename in the folder listing, you will be brought to the summary page for the selected file.

On this page, you will see everything about this file, including its full path as it should be referenced form your web site; its file type; and the size of the file.

Additionally, any extra fields will be displayed as required. For example, if the file is an image then its dimensions will be shown along with a preview of the image. If the folder in which the file resides has custom fields then the custom fields shall also be displayed.