Tavola is Italian for table, and each section has a Tav(ola) number, e.g. Tav14.
Very useful to get an idea of how components fit together as an exploded drawing, but being able to refer to a page and a number can help a lot when ordering parts or the terminology we use.
Lancia were pretty good at keeping the images accurate, but they occasionally did re-use drawings even when parts had changed in appearance. As such the parts books can never be a definitive guide to the appearance or order of assembly of parts.
