og.
            A live region is used to announce it to screen reader users when focus moves into the grid.
          </li>
          <li>The calendar heading displaying the month and year is marked up as a live region so screen reader users get feedback from the buttons and keyboard commands that change the month and year.</li>
          <li>
            To facilitate compact visual design in the calendar, the day names in the column headers are abbreviated to two characters.
            However, this make