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@@ -3209,6 +3209,16 @@ These variables function when using BibLaTeX for [citation rendering].
`natbiboptions`
: list of options for natbib
+#### Other
+
+`pdf-trailer-id`
+: the PDF trailer ID; must be two PDF byte strings if set,
+ conventionally with 16 bytes each. E.g.,
+ `<00112233445566778899aabbccddeeff>
+ <00112233445566778899aabbccddeeff>`.
+
+ See the section on [reproducible builds].
+
[KOMA-Script]: https://ctan.org/pkg/koma-script
[LaTeX Font Catalogue]: https://tug.org/FontCatalogue/
[LaTeX font encodings guide]: https://ctan.org/pkg/encguide
@@ -7541,6 +7551,11 @@ be taken from it instead of the current time.
`SOURCE_DATE_EPOCH` should contain an integer unix timestamp
(specifying the number of seconds since midnight UTC January 1, 1970).
+For reproducible builds with LaTeX, you can either specify the
+`pdf-trailer-id` in the metadata or leave it undefined, in which
+case pandoc will create a trailer-id based on a hash of the
+`SOURCE_DATE_EPOCH` and the document's contents.
+
Some document formats also include a unique identifier. For
EPUB, this can be set explicitly by setting the `identifier`
metadata field (see [EPUB Metadata], above).