private String getSlotSizes(int par, int chi) {
        String ssLine = "";
        int[] sizes = c.widgets.get(par, chi).getSlotSizes();
        if (sizes != null) {
            for (int i = 0; i < sizes.length; i++) {
                ssLine = ssLine + sizes[i];
                if (i < sizes.length - 1) {
                    ssLine = ssLine + ", ";
                }
            }
        }
        return ssLine;
    }