on the toolbar; or from the Window menu, select Cascade; or press Ctrl+Shift+J.
on the toolbar; or from the Window menu, select Tile Top to Bottom; or press Ctrl+Shift+K.
on the toolbar; or from the Window menu, select Tile Side by Side; or press Ctrl+Shift+L.
on the toolbar; or from the Window menu, select Next; or press Ctrl+F6.
on the toolbar; or from the Window menu, select Previous; or press Ctrl+Shift+F6.