The bookdown package is a GNU R package that facilitates writing books and long-form articles/reports with R Markdown. Features include:

* Generate printer-ready books and ebooks from R Markdown documents. * A markup language easier to learn than LaTeX, and to write elements such as section headers, lists, quotes, figures, tables, and citations. * Multiple choices of output formats: PDF, LaTeX, HTML, EPUB, and Word. * Possibility of including dynamic graphics and interactive applications (HTML widgets and Shiny apps). * Support a wide range of languages: R, C/C++, Python, Fortran, Julia, Shell scripts, and SQL, etc. * LaTeX equations, theorems, and proofs work for all output formats. * Can be published to GitHub, bookdown.org, and any web servers. * Integrated with the RStudio IDE. * One-click publishing to https://bookdown.org.