Deep navigation (level 2)

To build richer navigation sections may have a list of taxonomies defined in their front matter:

    +++
    [extra.poly]
    use_taxonomies= ["taxonomy_name", "another_taxonomy_name"]
    +++

Same taxonomies should be defined in your config.toml:

    taxonomies= [
        {name="taxonomy_name"},
        {name="another_taxonomy_name"}
    ]