Sets the tab margin for the tab box. If a single number is specified, all four margins are set to that number of pixels. If a list of two numbers is specified, the left and right margins are set to the first number, and the top and bottom margins are set to the second number. If a list of four numbers is specified, the margins are set in this order: {left, top, right, bottom}.
Shows or hides the tabs for tab boxes. If you hide the tabs, you need to provide another way to select and show tabs. For example, a list box that contains a list of references to the tabs. The default value is 1.