While the static site generator I use (Hugo) as well as others allow for content organization at the page level via tags, I find this unsatisfactory. Instead, I want to be able to categorize content at the level of headings on pages.
For this reason, I build my own subject index that links down to this level of specificity. Currently I am manually building it, but as content scales I will write a script to do it automatically before I push (see git hooks).
bikes
- bikes, Cyclete
- bikes, stand-up
decision-making
- decision-making, decision analysis