Parameterized JavaScript.
Parameterized JavaScript.

According to the PDF doc, an entry in the document's name dictionary,
listing the JavaScript actions, is required to execute parameterized
function call.

Also note that:
> The names are arbitrary and need not bear any relation to the
> JavaScript name
> space.

In this case, the name is _0000000000_.

magnet-cl/PyPDF2,magnet-cl/PyPDF2,manuelzs/PyPDF2,manuelzs/PyPDF2