The heading discipline spec/README.md §5 asks for, checked mechanically: one # title,
a **Status:** line on line 3, and decimal numbering that is gap-free at every level
(## 1., ### 1.1, #### 1.1.1). A lost or duplicated heading breaks the citations
every other document and the golden's Section column rely on, and nobody notices by eye.
Summary
Functions
Problems in one document, as file: message strings.
Problems across every document under root/spec; [] when the discipline holds.