Open a form with the Atto text editor in it. Click in the form field before the text editor Hit tab until you focus on the first item in the atto toolbar. Hit tab again - your focus should go into the content part of the text editor (skipping the rest of the buttons in the toolbar) Hit shift + tab - your focus should go back to the first tool in the toolbar Hit left/right arrow keys. Your focus should jump between the buttons in the toolbar (wrapping if necessary). Hit shift tab, then tab again - your focus should leave the toolbar, then return. When it returns, it should go to the last selected button.