Superscript

is there a mechanism to add Supercripts in the Redactor code shipping with Version 3? I've seen references on various forums to such facilities for the Craft CMS but nothing I can find for Perch.

We need to add superscripts 1, 2, 3 etc which refer the reader to footnotes thus numbered

Thanks

Perch: 2.8.31, PHP: 5.4.45, MySQL: 5.5.51-38.2, with PDO Server OS: Linux, cgi-fcgi Installed apps: content (2.8.31), assets (2.8.31), categories (2.8.31), perch_gallery (2.8.4), perch_comments (1.0.1) App runtimes: <?php include(PERCH_PATH.'/core/apps/content/runtime.php'); include(PERCH_PATH.'/addons/apps/perch_comments/runtime.php'); include(PERCH_PATH.'/addons/apps/perch_gallery/runtime.php'); ?> PERCH_LOGINPATH: /editorial PERCH_PATH: /home4/kelstef/public_html/editorial PERCH_CORE: /home4/kelstef/public_html/editorial/core PERCH_RESFILEPATH: /home4/kelstef/public_html/editorial/resources Image manipulation: GD Imagick PHP limits: Max upload 64M, Max POST 64M, Memory: 256M, Total max file upload: 64M F1: 2edba60ed1f613d6dd804feb202456a2 Resource folder writeable: Yes DOCUMENT_ROOT: /home4/kelstef/public_html HTTP_HOST: aircrewremembered.com REQUEST_URI: /editorial/core/settings/diagnostics/ SCRIPT_NAME: /editorial/core/settings/diagnostics/index.php