Quickly re-open the files of folders you recently accessed.
Tap the History icon to the left of the breadcrumb bar. Tap a file of folder to navigate to it.
To clear an item from your History, tap the Bookmarks icon and select the "History" tab.
Delete these entries by:
If you want to turn off history simply: Use the cog icon on the home screen and select "Admin Settings" -> "Feature Switches" and turn off the "Show Folder History" switch.