You can now have the option of creating an account. Accounts help you keep track of your documents in a few different ways.
Take a look at this screenshot.
You can click the stars on the left to toggle your favorite documents. Favorites will appear at the top of your dashboard.
This section will show the last 10 documents that you've visited (excluding your favorites). Your most recent documents will appear on the top. Once you exceed 10 documents, they will fall off the bottom of the list.
The Preview column is auto created from the first line of text in the document.