FX Documentation helps to improve SEO and accessibility while adding images to the content.
Whenever you add an image to the content, you should always fill out an ALT attribute of the image that is displayed if the image cannot be loaded. This attribute is also used by search engines to index images and by disabled people.
After adding an image into your content double-click on it. Fill out the field Image Title and save. The image title will be automatically displayed below the image. See the example below.
This functionality is provided by custom JS script installed with FX Documentation. You cannot see the image title while editing the record. It will be only shown while viewing the record.