2. User configuration-> Manage templates-> Start menu and taskbar-> Double-click "Do not keep the history of recently opened documents->" in the window on the right; "Enabled".

3. However, this will not only delete the history of the drawing, but also delete the history of other documents. For example, the history of explorer and IE browser that have been added to the start menu will be deleted.

4. Or: Double-click to enable "Delete the' Picture' icon from the start menu", so that you can't see the shortcut to start the picture in the start menu.

5. Or you can double-click to enable "Clear the recently opened documents when you exit the system", so that as long as you restart the computer after drawing, the document history will be automatically deleted. Of course, this will also delete other document history.