applet.button("select").click();
panel.get2DHub().updateView();
applet.panel("renderpanel").robot.waitForIdle();
IAtomContainer ethane = panel.getChemModel().getMoleculeSet().getAtomContainer(0);
RectangleSelection sel = new RectangleSelection();
sel.addAtom (ethane.getAtom(0));
sel.addBond(ethane.getBond(0));
panel.getRenderPanel().getRenderer().getRenderer2DModel().setSelection(sel);
panel.selectionChanged();
try {
applet.button("cut").click();