void setBondmode() throws ScriptException {
		checkLength3();
		boolean bondmodeOr = false;
		switch (statement[2].tok) {
		case Token.opAnd:
			break;
		case Token.opOr:
			bondmodeOr = true;
			break;
		default:
			invalidArgument();
		}
		viewer.setBooleanProperty("bondSelelectionModeOr", bondmodeOr);
	}