The Explorer window is the place where all of your documents will be listed. Using the options available in the left panel and the tool bar (at the top), you can easily manage & collaborate on your documents.
In the file listing, starting from the top, you can see your recently accessed files (Today , Yesterday and Previous 7 days). The files listed in this page will also have additional information like :
Also, the Name , Author & Date Modified options at the top can be used for sorting the files ( Ascending / Descending file names, Author names and recently modified time and etc).