Hooks

A nested section, so the sidebar has something to nest.

This page sits in content/guide/advanced/, one level deeper than its neighbours, which is the only reason it exists: a documentation theme has to show what it does with a subdirectory, and the answer is a collapsible group inside the group above it.

Before and after

[hooks]
before = "wren check"
after = "wren publish"

A reader who collapses this group keeps it collapsed on the next page, except when the page they are on lives inside it. Hiding someone’s own position is the one unhelpful thing a nav can do.