.. Sadly can't get this to work with the same TOC level in additional info.
   {{ data['name'] }} ({{ data['abbrev']}})
   {{ "=" * (data['name'] | length + data['abbrev'] | length + 3) }}

Abbrev: {{data['abbrev']}}

{{ data['desc'] }}

Functions
---------

{% for item in data['functions'] %}
.. req:: {{item}}
    :id: R_{{data['abbrev']}}_{{loop.index}}
{% endfor %}


Parameters
----------
{% if data['params'] %}
{{ make_list_table_from_mappings(
    [('Parameter', 'name'), ('Value', 'val'), ('Tags', 'tags')],
    data['params'],
    title='System Parameters',
    ) }}
{% endif %}