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This is a minimal example of a book based on R Markdown and bookdown (https://github.com/rstudio/bookdown). Please see the page "Get Started" at https://bookdown.org/yihui/bookdown/ for how to compile this example into HTML. You may generate a copy of the book in bookdown::pdf_book format by calling bookdown::render_book('index.Rmd', 'bookdown::pdf_book'). More detailed instructions are available here https://bookdown.org/yihui/bookdown/build-the-book.html.
You can find the preview of this example at https://bookdown.org/yihui/bookdown-demo/.