I appreciate the response! But what you linked shows how to add sourceedit to the In place Editor. Not the TouchUI Dialog. I'm looking to see what I need to add to _cq_dialog file

According to the documentation sourceedit is available as a plugin for RTE in the TouchUI dialog. (https://docs.adobe.com/docs/en/aem/6-2/release-notes/touch-ui-feature-status.html#Feature Status: Text, Table & Image Editors) How do I enable this?