This enum indexes the available formats for expressing distance units.

Public Enum DistanceUnitFormat
  Architectural = 4
  Current = -1
  Decimal = 2
  Engineering = 3
  Fractional = 5
  Scientific = 1
End Enum

public enum DistanceUnitFormat {
  Architectural = 4,
  Current = -1,
  Decimal = 2,
  Engineering = 3,
  Fractional = 5,
  Scientific = 1
}