procedure TForm1.Button1Click(Sender: TObject);
begin
RichEdit1.CaretPos := Point(Length(RichEdit1.Lines[3]), 3);
RichEdit1.SetFocus;
end;
begin
RichEdit1.CaretPos := Point(Length(RichEdit1.Lines[3]), 3);
RichEdit1.SetFocus;
end;
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