Now that you understand the meaning behind each menu item, check those that you wish to be erased and be sure that any items you wish to keep intact are unchecked. Once you are ready, click Clear Private Data Now and all of the item types that you selected will be cleared out.
You may have also noticed a choice at the bottom of the dialog entitled "Ask me before clearing private data". This box is checked by default. Had the box not been checked, your private data would have automatically been cleared when you selected Clear Private Data from the Tools menu or hit the Ctrl+Shift+Delete keyboard shortcut.
In this case, there is another method you must use if you wish to modify your "Clear Private Data" settings.
