Certain design elements, such as rulers, logos should not display ALT text in the browser, when the mouse cursor rests over them. Otherwise, it could draw attention away from the primary content of the site.
Open the page, layout or template.
Select all images on the page that should not have alternate text. (The Ctrl and Shift keys are helpful when selecting multiple objects.)
Choose Descriptors from the Edit menu.
Select Alternate Text and use the delete key on the keyboard to remove any text.
Click the Copy button of the Descriptors panel.