sb.append("\n"); sb.append(" margin = " + this.margin +"\n"); sb.append(" border = " + this.border +"\n"); sb.append(" padding = " + this.padding +"\n");
    public String getTestString() {        StringBuffer sb = new StringBuffer();        // type        if ( this instanceof LineBox ) {            sb.append( "line:" );        } else if ( this instanceof InlineBox ) {            sb.append( "inline:" );        } else {            sb.append( "box:" );        }        // dimensions and location        sb.append( "-box(" + x + "," + y + ")-(" + width + "x" + height + ")" );        if ( fixed ) {            sb.append( "-fixed" );        }        sb.append( "-pos(" + top + "," + right + "," + bottom + "," + left + ")" );        if ( floated ) {            sb.append( "-floated" );        }        // background images        sb.append( "-backimg(" + background_image );        sb.append( "-" + repeat );        sb.append( "-" + attachment );        sb.append( "-" + background_position_vertical );        sb.append( "-" + background_position_horizontal + ")" );        return sb.toString();    }