The feature described in this Help topic is only available if support for Japanese is enabled through Microsoft Office Language Settings.
You can attach furigana to a contact's last name. In Contact Card view (the default view) or Detailed Contact Card view, an
index bar with tabs marked with numbers, the letters a through z, and
the characters 
through 
is displayed vertically along the right edge of the view. If you click a tab on the index, the cards for contacts whose last names begin with that letter or character are displayed. For example, if you click 
on the index,
the contact card for 
(with a phonetic guide of 
) is displayed.