It used to be a selective copy of the Catmandu tutorial but adapted for Metafacture. The Catmandu tutorial was created by @phochste. It is great if you want to learn Catmandu. So try it out. Since ...
The facturae format specification is available on http://www.facturae.es. There is also an english version available here. FacturaePrint uses erubis to translate the ...