* Modify svg2code_ex to use differnt font size at two test items to illustrate the function of the new text parser * Generate seperate text segments if the x is defined in the tspan. With this settings, we may be able to implement the text alignment already. * Be warnned that the text element may not be generated at all. We may need to convert the text element into a group for this situation. Currently, we leave it as it is.