This practice is a reminder to carefully check and update your form’s tab order. If you modified an existing form to meet accessibility requirements, you most likely added a number of items to your form. In that case, you must reset the form's tab order so that the focus moves from item to item in a logical order. Keep in mind that many users with disabilities rely solely on keyboard navigation to review and complete forms.
In particular, you should include in the tab order any read-only fields that implement informative text elements such as headings, titles, captions, and instructions. If the form contains a toolbar
item, you should also include the items that appear in the toolbar.
The following diagram shows a portion of a form in Designer, with the tab order view enabled. The arrows indicate the tab order.
Note that the title of the form (Product Order Request) is located in a toolbar and is the first item in the tab order. To include this title in the tab order and make its accessibility message available to the screen reader, it was implemented using a read-only field
item, rather than a label. Other fields that implement read-only text include the "Contact Information" and "Select Items for Purchase" headings. These items are also part of the tab order so that screen reader can read their accessibility messages.
Exceptions to this practice
Currently there are no exceptions to this practice.