Default environment properties for the entire scene (post-processing effects, lighting and background settings). The [code]WorldEnvironment[/code] node is used to configure the default [Environment] for the scene. The parameters defined in the [code]WorldEnvironment[/code] can be overridden by an [Environment] node set on the current [Camera]. Additionally, only one [code]WorldEnvironment[/code] may be instanced in a given scene at a time. The [code]WorldEnvironment[/code] allows the user to specify default lighting parameters (e.g. ambient lighting), various post-processing effects (e.g. SSAO, DOF, Tonemapping), and how to draw the background (e.g. solid color, skybox). Usually, these are added in order to improve the realism/color balance of the scene. https://docs.godotengine.org/en/3.1/tutorials/3d/environment_and_post_processing.html The [Environment] resource used by this [code]WorldEnvironment[/code], defining the default properties.