You can add many levels of subheaders as you like, but after level 3 they become quite hard to distinguish and will clutter the TOC. If a subject requires many sub-subcategories, consider giving the subcategory its own page. Alternatively, if the sub-subcategories are only small in content, you could make non-TOC headers with simple '''bold text'''. | You can add many levels of subheaders as you like, but after level 3 they become quite hard to distinguish and will clutter the TOC. If a subject requires many sub-subcategories, consider giving the subcategory its own page. Alternatively, if the sub-subcategories are only small in content, you could make non-TOC headers with simple '''bold text'''. |