How to enable WYSIWYG in a text field summary? I have a body field (Text field with summary) with WYSIWYG CKeditor enabled.

However, the "summary" part of the field lacks a WYSIWYG editor.
How can I enable it?
The WYSIWYG module's logic acts on text fields with input formats, if you want to explicitly target a form element by its ID you can use the CKEditor module instead.