Глава 9 Пожилой человек
9.1 2011
HTML books can be published online, see: https://bookdown.org/yihui/bookdown/publishing.html
9.2 2012
By default, users will be directed to a 404 page if they try to access a webpage that cannot be found. If you’d like to customize your 404 page instead of using the default, you may add either a _404.Rmd or _404.md file to your project root and use code and/or Markdown syntax.
9.3 2013
Bookdown HTML books will provide HTML metadata for social sharing on platforms like Twitter, Facebook, and LinkedIn, using information you provide in the index.Rmd YAML. To setup, set the url for your book and the path to your cover-image file. Your book’s title and description are also used.
9.4 2014
This gitbook uses the same social sharing data across all chapters in your book- all links shared will look the same.