Adding or changing hover text associated with a picture

Ideally when a visitor places their cursor on a picture on your page hover text should appear to describe the image - try hovering on the picture below.

It may seem unimportant but visitors to your website with sight problems may rely on the hover text to "see" the image.  Don't forget Google and the other search engines can't see so they rely on this hover text and so it will improve your indexing and the search engines look more favourably on websites that try to help the reader.

 
How to add or change hover text

Select the image by clicking on it:

Now click on the Image icon, a box will now appear (it may have your old text or it might be empty as my example):

Add a short piece of descriptive text here.   

 

Once you are happy click on OK and then save and publish the page.