The Add outdoor light option allows light coming from the invisible wall to naturally fill the room as if it was a window. Un-ticking the option means that the invisible wall will provide no light source.
Note: To activate the Add outdoor light option, the box Invisible in the Attributes section needs to be ticked. See also How to make a wall invisible.
In Room definition mode,
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Select the wall you want to make invisible.
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Right-click on the wall and select Properties.
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In the Attributes section, ensure that the box Invisible is ticked.
- Add outdoor light will now be active. Untick the box to deactivate the light.
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