Commit 4ae03613 authored by Ernestas Kulik's avatar Ernestas Kulik 🦑

docs: Reorganize and fix

This commit completes the sections file with subsections, moves most
documentation to headers (no real reason to, especially given that
changes there may cause unwanted rebuilds, but it feels better to have
it in the headers) and fixes some annotations.

Closes #565
parent a21de829
Pipeline #23213 passed with stage
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