Thanks to Jason for helping me with my project.
I can create content, headers, footers (with embedded automatic page numbers in thanks to his hint about using XmlUtils.unmarshalString), page background images using an image embedded in the header (Again, thanks for viewtopic.php?f=6&t=242)
I now have a question that is more about the structure of the WML language and what elements to use.
I have the 5500 page ISO 29500-1-2008 ...