cargo install mdbook-tag
book.toml ```toml [preprocessor.tag] command = "mdbook-tag"
book.toml
filename = "customtagsfile.md" ```
~~~markdown tag:one-tag tag:two-tag ~~~
tag:one-tag
tag:two-tag
~~~markdown #one-tag #two-tag ~~~
#one-tag
#two-tag
#one-tag #two-tag