oWin:end() -> <lSuccess>

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 PARAMETER:

   <lSuccess>  is TRUE if the window could be closed ( iE the valid clause
               returned TRUE


 DESCRIPTION:

  This method should be called if you want to close the window. Please note, 
  that the window is not destroyed by this method !
  After closing the window, code execution is resumed directly after the
  ACTIVATE WINDOW command.

 !seealso:"bValid" "Destroy" "Hide" window.eho:"ACTIVATE WINDOW"