This is an example of annotation, hover the highlighted ”annotation” word to see it in action!
If you find the plugin useful, I would love to get a review or rating:
https://wordpress.org/support/view/plugin-reviews/tinymce-annotate
Also, any donation would also be greatly appreciated:
https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=C2DCQ4BXXVR3A