@@ -18,7 +18,7 @@ constructor arms use `+*`.
1818
1919## `+|` "lusbar"
2020
21−Chapter label.
21+Chapter label (not useful)
2222
2323#### Syntax
2424
@@ -45,7 +45,10 @@ follow it. The arms of a core can be divided into **chapters** for
4545'organization'. Chapter labels aren't part of the underlying noun of the core;
4646they're stored as type system metadata only.
4747
48−See `tome` in the Hoon standard library.
48+See [`tome`](/docs/hoon/reference/stdlib/4o#tome) in the Hoon standard library.
49+
50+**Note:** The `+|` rune has little practical utility. Chapter labels cannot be
51+referenced short of manually processing the `$type` of a core.
4952
5053#### Examples
5154