procedure TForm2.Edit1KeyPress(Sender: TObject; var Key: Char);
var a: string;
    i: integer;
begin
if Key = #13
then
  begin
    if Edit1.Text <> '' then
        if edit2.Text = '' then
             edit2.Text:= edit1.Text;
        else
             edit2.Text:= edit2.Text + ' ' + edit1.Text;
     edit1.text:= '';
  end;
end;
end.