We can change the position of our Navigator view in the Workbench window.
Click in the title bar of the Navigator view and drag the view across the Workbench window. Do not release the mouse button yet.
While still dragging the view around on top of the Workbench window, note that various drop cursors appear. These drop cursors (see previous section) indicate where the view will dock in relation to the view or editor area underneath the cursor when you release your mouse button.
Dock the view in any position in the Workbench window, and view the results of this action.
Click and drag the view's title bar to re-dock the view in another position in the Workbench window. Observe the results of this action.
Finally, drag the Navigator view over the Outline view. You will see a stack cursor. If you release the mouse button the Navigator will be stacked with the Outline view into a tabbed notebook.