Visual Aid Box: This option will enable the Visual Aid Box. This button will be added to row three 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. This option is still rather confusing to me. The only purpose I see is that it adds little gray borders around the table area when inserting a table with tinymce. It is buggy (at best) across browsers, but it can aid a little with placement and content. I will update this as I get time to play around with the option.