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The examples below show the encoding of the same Airport Reference Point (ARP) with different CRS applied. In the first example (OGC:1.3:CRS84), the longitude value comes first, then the latitude. In the second example (EPSG:4326), the latitude value comes first and then the longitude.
For all geometries (Surface, ElevatedPoint, etc.) a CRS shall be specified. The CRS is either defined directly on the geometry element using the srsName attribute or is derived from the larger context the geometry is part of.
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