void doAutobond() {
		// perform bonding if necessary
		boolean doBond = (bondCount == 0 || isMultiFile || isPDB && bondCount < atomCount / 2);
		if (viewer.getForceAutoBond() || doBond && viewer.getAutoBond() && getModelSetProperty("noautobond") == null) {
			autoBond(null, null);
		}
		viewer.setShapeProperty(JmolConstants.SHAPE_STICKS, "reset", null);
	}