sublayer
A sublayer is equivalent in size to a window and is itself a non-entity logical structure. sublayer names can be modified. You can have multiple sublayers on each window, but only one sublayer can be displayed at a time. You can select the currently displayed sublayer in the "Properties - Display" of the window. As shown in the following figure, there are two sublayers on the window, New sublayer and New sublayer 1, the first sublayer has a numeric control and a progress bar control; the second sublayer has a dashboard control. The first sublayer is currently displayed:
Select the second sublayer in the navigation bar: