todo-history.md

@@ -718,6 +718,10 @@ The done `todo.md` items in full, as they were written. `todo.md` keeps a one-li
   - [x] **12d — The README, `MIGRATION.md` and the sweep.** The README's examples and error tables
         follow, `MIGRATION.md` linked from one README line; docs and fixtures swept for any stale
         `::`/`:name` spelling.
+- [ ] **13 — The schema's gap attributes (`0.2.0`).**
+  - [x] **13a — `rule` and `layoutSection`.** `rule`'s `color`, `style` and `weight` and
+        `layoutSection`'s `columnRuleStyle` join their tables and `spec/flavour.md` bullets, with
+        round-trip fixtures; their gap entries go.
 
 ## 5 — Ship `0.1.0`
 

todo.md

@@ -225,9 +225,7 @@ proves 12, 13 spells 11's gaps in 12's grammar, and 12 rewrites code 4b and 4c c
       or an `href` or `title` no CommonMark escape writes — and a directive link CommonMark could
       spell is `unsupported-node-shape`. That leaves `unspellable-link` no cause, so it leaves
       `ConvertErrorCode` in `0.2.0`, §8 recording the removal.
-  - [ ] **13a — `rule` and `layoutSection`.** `rule`'s `color`, `style` and `weight` and
+  - [x] **13a — `rule` and `layoutSection`.**
-        `layoutSection`'s `columnRuleStyle` join their tables and `spec/flavour.md` bullets, with
-        round-trip fixtures; their gap entries go.
   - [ ] **13b — The directive link.** `link` spelled as above in both directions, with a round-trip
         fixture per trigger, `spec/flavour.md`'s Marks section following; `unspellable-link` removed
         from the code list, its `errors/` fixtures and the CommonMark suite's `unspellable`