All images or tables should have meaningful alt text. This alt text should
be clear enough that individuals unable to perceive the image or table still get
the message that they are putting across. To add alt text to an image or table
simply right-click the object and select edit alt text. A small window will open
prompting you to enter the alt text. It should be noted that purely decorative
images which do not contribute to user understanding should be denoted as such.
this can be done in the edit alt text window by selecting the mark as
decorative option. It is also notable that you may simply enter two quotation
marks into the alt text window to denote them as decorative.