As a slight refinement to the above, would it be possible to tweak the airport recognition on any imported user document, so that they could be grouped by type within an airfield? e.g.:
XXXX_Airfield_[Description]
XXXX_Airspace_[Description]
XXXX_Approach_[Description]
XXXX_Arrival_[Description]
XXXX_Departure_[Description]
XXXX_Noise_[Description]
XXXX_[Description] would just go into an unclassified section (effectively as now).
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