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  CLASS: ExtendedAttrHeaderDesc     --DVM
  PUBLIC METHODS:
  
    implAttrLocation()   - Gets/sets implAttrLocation field.
    applAttrLocation()   - Gets/sets applAttrLocation field.
    operator!=()         - Returns False if equal to another EAHD.
  
  USAGE NOTES:
   Usable as any other TaggedDescriptor.
  
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