This module adds a new button to CKEditor which allows users to hide selected
content and only show it on "Read more" button click and hide content when click "Read less" button.

Requirements

CKEditor Module (Core)

Installation

1. Enable the module
2. Open Text formats and editors settings (admin/config/content/formats).
3. Click on Full Html Configure button
4. Drag and drop the Read More button to the CKEditor toolbar.