In the specification tree, select an environment
wall (or select it directly in the 3D window).
![](../RtrUserImages/envtree02NLS.gif)
Right-click and select Hide/Show.
The selected wall is grayed in the specification tree and is not taken
into account at rendering time, as shown in the example below:
![](../RtrUserImages/envtree03NLS.gif)
![](../RtrUserImages/boxenv02.gif)
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