Example: State
A <State Related Geometry> representing different states of a runway for EAC_RUNWAY_SURFACE_CONDITION might organize different representations of the runway for
- CLEAR - The runway surface has no weather-related obstruction.
- SNOW - Snow is present on the runway surface.
- TOTAL_ICE - The runway is covered by ice.
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Many state-related aggregates use the <State Control Link> mechanism to express how state changes are determined.