Footnote references may appear within a footnote. ``` [^a] [^a]: a[^b][^c] [^b]: b .

1

  1. a23↩︎︎

  2. b↩︎︎

  3. ↩︎︎

``` Footnote references in unreferenced footnotes are ignored. ``` para [^a]: a[^b][^c] [^b]: b .

para

``` Footnotes may appear within footnotes. ``` [^b] [^a] [^a]: [^b]: inner .

1 2

  1. inner↩︎︎

  2. ↩︎︎

```