Description
The “gform_entry_detail_title” filter in Gravity Forms allows the title displayed on the entry detail page to be modified.
Usage
add_filter( 'gform_entry_detail_title', 'my_function_call' );
Example
add_filter( 'gform_entry_detail_title', function( $title, $form, $entry ) { return 'Your new title for entry #' . $entry['id']; }, 10, 3 );
Source Code
This filter is located in entry_detail.php.