on-bookdown.netlify.com/literature.html)...
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### Chapter 2  Literature

Following Chapter [1](https://skeleton-bookdown.netlify.com/intro.html),...
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bookdown supports a nice way for explicitly setting the header ID label. If you follow the header text with an opening curly bracket (separated from the text with a least one space), a hash, the ID label and a closing curly bracket, the ID label is set on the header. 

Why would you want to do that? You would want to set ID labels so you can m