> What you want is to have multiple pdf files, say a.pdf and b.pdf, and link from
> a.pdf to some specific page on the b.pdf, right?

No, I want multiple html files and a single pdf file generated from
multiple org files. It seems the simplest solution is to call a function
that fixes the links for the pdf export. I'll report here once I have
that function.

Best,

Alan

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OpenPGP Key ID : 040D0A3B4ED2E5C7
Monthly Athmospheric CO₂, Mauna Loa Obs. 2017-12: 406.82, 2016-12: 404.42