Modifying How Information is Displayed in the Outline Editor
The Outline Editor contains the Model section that displays the tree structure (or outline) of the project and the Properties section that displays the properties for the node that is selected in the project’s outline. You can display the Model and Properties sections in the following orientations:
Horizontally, one on top of the other
Vertically, side-by-side
To modify how the sections are displayed in the Outline Editor
To display the Model and Properties sections horizontally, one on top of the other, click 
Change to Horizontal Layout which is shown in the toolbar of the Outline Editor. To display the Model and Properties sections vertically, side-by-side, click 
Change to Vertical Layout which is shown in the toolbar of the Outline Editor.