User Interrupt Ctrl-C              {$U-}                             pp 315

 Default:   Passive

 Scope:     Global

 Active:    {$U+}  User may interrupt program at any time with Ctrl-C.

 Inactive:  {$U-}  Ctrl-C is ignored.


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 Notes:     This directive must be placed before the declarations.
            It cannot be redefined during program execution.

            Activating this directive will significantly slow down program
            execution.