Playing with #Pandoc #lua filters and the repository of examples is broken as fuck.
Now all the calls to new elements are forced to include the tag like
pandoc.Null('Null')
So I was using inline stuff like
pandoc.RawInline('latex', '\\appendix')
And it was doing nothing...
Until I finally understood documentation and did this:
pandoc.RawInline('latex', '\\appendix', 'RawInline')
This worked fine.
Amazing