The Comments CKEditor plugin adds a highly desirable functionality to the popular WYSIWYG editor. With this plugin, you can easily add comment text and associate it with specific locations in your editor text area, quite similar to the way this is done in Google Docs and Microsoft Word.
All the information you need is here:
Comments can be placed anywhere in the text.
Comment markers can be freely dragged from one location in the text to another
Comments are arranged in conversation threads.
The plugin supports comments management operations: Reply to comment Edit comment Delete comment.
The comment includes not just the text but also the commentator’s name, its avatar and the time of comment creation.
Comments can be filtered by id of the commentator.
Integrating this plugin into your site was designed to be straightforward and demo code is provided. Additional information and technical details of the plugin integration are available in the documentation page.