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  Abstract Defines a class method only implemented in subclasses
  Default Defines default processing for a property
  Dynamic Allows a class method to be overriden in derived classes
 System Export Makes a function or procedure in a DLL externally available
  Index Principally defines indexed class data properties
  Out Identifies a routine parameter for output only
  Overload Allows 2 or more routines to have the same name
  Override Defines a method that replaces a virtual parent class method
  Private Starts the section of private data and methods in a class
  Protected Starts a section of class private data accesible to sub-classes
  Public Starts an externally accessible section of a class
  Published Starts a published externally accessible section of a class
  Virtual Allows a class method to be overriden in derived classes
 
 
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