Size You can set the size of the menu in pixels.
This is where your menu is previewed. All changes are instantly displayed. Also, you can test how the buttons web respond to the mouse events. Just act like it is a web page: move mouse over the buttons, click them and so on to preview.
Left-click a button to select. If you want several buttons web to be selected use Shift and Ctrl keys.
Use Shift to select several adjacent buttons. Click first button to be selected, then press Shift and while holding it pressed click the second button. This two buttons and the buttons that lay between them will be selected
To select several buttons one by one use Ctrl key. Click first button to be selected, then press Ctrl and while holding it pressed click the second button. This two buttons will be selected
To cancel selection just click anywhere in the Work area outside the buttons web.