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Definition

Emission nature is a group of sources with a common theme. For example: M25 motorway.

Emission nature relates to a source of a unique type: road nature, railway nature, industrial nature.

Usefulness

In particular nature makes it possible to group road/track sections so that:

•Interfaces are more readable because the number of objects is reduced.

•The size of simulation files is reduced, cumulating levels over the whole nature.

•Display speed is increased and memory used by the maps is smaller.