title: Numbering table of contents for Gitbook
body: <p>I want to number the table of contents for a book processed by gitbook but cannot figure out how to do this.  If I use the Gitbook editor, there is a preference to see the numbering while editing, but I cannot see the numbering when creating an html version of the book.</p>
  
  <p>I know it is possible to do so: the table of contents (sidebar) of <a href="https://gitbookio.gitbooks.io/documentation/content/format/chapters.html" rel="nofollow noreferrer">https://gitbookio.gitbooks.io/documentation/content/format/chapters.html</a>
  is numbered. By comparison, the one for <a href="https://toolchain.gitbook.com/" rel="nofollow noreferrer">https://toolchain.gitbook.com/</a> is not. </p>