The Windows->Tile Vertical menu item restores the vertical tiled window style. Any user rearrangement or size changes are retained.
The default arrangement of vertically tiled file windows are two adjacent, equally sized windows with both fully visible. To reset the windows to default size and position, push the Size pushbutton in the Data Panel.
This arrangement is good for all window views except Details view, which normally needs a wider window.
Accelerator Keys - Alt 1
Example of Vertically Tiled Files Windows
In the example above, Files window A is in Text view while window B is in large Icon view.