Tags can be nested using a “tag/subtag” syntax, to allow a more fine-grained organization of your Zettelkasten, especially when using advanced queries as shown in.
For example, the following zettel is tagged “math/calculus/definition”
--- tags: - math/calculus/definition --- # Derivative
It will be included in the following tag queries:
Seeto understand how to link zettels automatically based on tag patterns as above.
<z:tags?filter=**> to render your entire tags set as a tree. Note that this only renders the tags; whereas
<z:zettels?tag=...> of exists to link to the zettels tagged with matching tags.