JButton btnGo = btn("Go", new P0() {public void e() {
					// UT
					dialog.dispose();
					int index = StringUtil.indexOfHappenNum('\n', Integer.parseInt(tfLine.getText()) - 1, tp.getText());
					if (index == -1) {
					} else if (index == 0) {
						tp.setCaretPosition(index);
					} else {
						tp.setCaretPosition(index + 1);
					}
				}}