Table Controls Box: This option will enable the Table Controls Box. This button will be added to row four of the visual editor. Usage: Placing a check in the box will enable the button in your visual editor. Unchecking the box removes the button from the editor. You probably want to consider using the next option down, the "Table Controls Dropdown Box". This is a new feature, and lists all the table buttons in a dropdown list, rather than buttons that are side by side. This saves a TON of space in the visual editor. These two Table's options function EXACTLY the same. It's just the button layout that differs. More on tables coming soon.