hpdf_document2: Output format for producing a bookdown pdf
In RLesur/weasydoc: Convert R Markdown to PDF Using HTML and CSS

Output format for producing a bookdown pdf

hpdf_document2(..., engine = c("weasyprint", "prince"), engine_opts = NULL,
  keep_html = FALSE, number_sections = TRUE, pandoc_args = NULL,
  notes = c("endnotes", "footnotes"),
  base_format = rmarkdown::html_document)

`...`	Arguments to be passed to a specific output format function. For a function `foo2()`, its arguments are passed to `foo()`, e.g. `...` of `html_document2()` are passed to `rmarkdown::html_document()`.
`engine`	A `PDF` engine.
`engine_opts`	A character vector of command-line arguments to be passed to `engine`.
`keep_html`	Keep intermediate `HTML` file.
`number_sections`	Whether to number section headers: if `TRUE`, figure/table numbers will be of the form `X.i`, where `X` is the current first-level section number, and `i` is an incremental number (the i-th figure/table); if `FALSE`, figures/tables will be numbered sequentially in the document from 1, 2, ..., and you cannot cross-reference section headers in this case.
`pandoc_args`	Arguments to be passed to a specific output format function. For a function `foo2()`, its arguments are passed to `foo()`, e.g. `...` of `html_document2()` are passed to `rmarkdown::html_document()`.
`notes`	Render notes as endnotes or footnotes. Footnotes are not yet supported by WeasyPrint and are only well rendered with Prince.
`base_format`	An output format function to be used as the base format.