wp-includes/blocks/footnotes.php:122Adds the footnotes field to the revisions display.
$fieldsarrayarrayfunction wp_add_footnotes_to_revision( $fields ) { $fields['footnotes'] = __( 'Footnotes' ); return $fields;}Introduced in 6.3.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/blocks/footnotes.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.