Changing the Display Order of Layers
Multiple layers can be viewed at the same time in the main viewing window. Layers are displayed in listed order, with the ‘lower’ layers partially obscured by the ‘higher’ layers. The order in which the layers are displayed is shown in the View Contents list.
The layer at the top of the list is the first or deepest layer displayed. This layer may be hidden or partially obscured by subsequent or higher layers. Images obscure everything underneath their extents and should be listed at the top. All other layers are drawn on top of this layer in the order in which they appear in the list. This is the opposite of conventional GIS.
To change the order of the layers, select the layer that you wish to change in the View Contents list, and use the ‘Lift’ or ‘Lower’ buttons to position the layer appropriately. Simultaneously holding down the Shift or Ctrl keys will cause the layer to move to the top or bottom of the list.