The software keeps current and past documents in storage so that work in progress can be resumed at a future date. These can be seen in the Recent Document section when you start the software. 

There are two ways they can be deleted.

Within the software

• Start the software and Go to the Recent Documents.
• For a single item right click on it and choose Delete.
• When you want to delete some of them then hold down the shift key and select the desired items then right click and choose Delete.
• When you want to delete all of them use the keyboard shortcut Crtl  +A to select all, then right click and choose Delete.
  

Using Windows

• Right click on the Start button and choose Run
• Paste in this text and click OK : %AppData%\ReadirisPDF\Workspace
• Delete the Workspace folder