config.yml

# Manual categories topics
topics:
 - intro:
    - title: Introduction
    - tag: intro
 - first:
    - title: Chapter 1
    - tag: chapter-1
    - subfirst:
       - title: Chapter 1.1
       - tag: chapter-1.1
 - second:
    - title: Chapter 2
    - tag: chapter-2
    - subsecond:
       - title: Chapter 2.1
       - tag: chapter-2.1
       - subsubsecond:
          - title: Chapter 2.1.1
          - tag: chapter-2.1.1
    - othersubsecond:
       - title: Chapter 2.2
       - tag: chapter-2.2
 - advanced:
    - title: Advanced
    - tag: advanced