QT GUI Tab Widget
This block creates a tabbed widget to organize other widgets. The ID of this block can be used as the tab_id in the GUI hints of other widgets.
The GUI hint can be used to position the widget within the application. The hint is of the form [tab_id@tab_index]: [row, col, row_span, col_span]. Both the tab specification and the grid position are optional.
See GUI Hint for more info