Topics here seemed to switch. The op wanted an option to print all character sheets at once. Now we have issues of not enough text and custom output.
For getting all the "Text" you need to print the Dossier called "
Abilities & Gear Description Appendix". That fixes the issue of only getting three print lines. This works the same in Pathfinder.
For custom output it uses XSLT not XML but knowing XML will help. To learn how to do custom output in HL go to "
Help->Hero Lab Manual->Custom Output". Of course the more you know about XML, HTML, XSLT and maybe some javascript the better this will all work. In those cases you can easily find thousands of pages of help using google.