3.13 Omit a heading in the table of contents
If you do not want certain section headings to be included in the table of contents, you can add two classes to the heading:
unnumbered. For example:
Note that this feature requires at least Pandoc 2.8. You may check your Pandoc version via
rmarkdown::pandoc_version(). If the version is lower than 2.8, you may install a newer version by following the instructions at https://pandoc.org/installing.html.