* Generate the ToC according to the converted (by XSL) headings of the hdoc
* Handle as fully as possible of widows and girl orphans; trying to match Prince's layout and implementing the suitable CSS rules (which shall not be interpreted by FS)
* Allow the user to override some specific CSS rules, according to the main layout logical rules
* Manage container.xml and content.xml validations using jing as jing task can't be handled with opale_to_pdf.ant call.
* Bonus: find out a HTML editor to manually add line breaks to a hdoc file in order to resolve widows and girl orphans problems after the PDF file's generation