Accordion Menu: Keyboard Control
- Hitting the tab key focuses you to the menu or the last open item.
- The up and down arrow keys should navigate you through the menu items.
- The space bar, enter key and right arrow opens a menu if already closed.
- The space bar, enter key, esc and left arrow opens a menu if already open.
- Shift-tab and up arrow keys should navigate up the menu, including open sub-menus.
- When focused on a link item, the space bar and enter key should navigate to the link.