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unit Unit4;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, Borland.Vcl.StdCtrls, System.ComponentModel,
  Borland.Vcl.ComCtrls;

type
  TForm4 = class(TForm)
    re: TRichEdit;
    Button1: TButton;
    OpenDialog1: TOpenDialog;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form4: TForm4;

implementation

{$R *.nfm}

procedure TForm4.Button1Click(Sender: TObject);
begin
   if opendialog1.execute
      then re.lines.Loadfromfile(opendialog1.filename);
end;

end.                    

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{\rtf1\ansi\ansicpg1252\uc1 \deff0\deflang1033\deflangfe1033
  {\fonttbl{\f0\froman\fcharset0\fprq2
    {\*\panose 02020603050405020304}Times New Roman;}
  {\f2\fmodern\fcharset0\fprq1
...                    

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{\rtf1\ansi\ansicpg1252\uc1 \deff0\deflang1033\deflangfe1033
   {\fonttbl{\f0\froman\fcharset0\fprq2
    {\*\panose 02020603050405020304}Times New Roman;}
  {\f2\fmodern\fcharset0\fprq1
...