Starting Bookreader on Tru64 UNIX
  To start Bookreader on Tru64 UNIX, choose Bookreader
  from the Session Manager's Applications menu, or from the
  User Executive's Applications menu.

  Alternatively, you can type the following command at the
  shell prompt:
  % /usr/bin/X11/dxbook &

  The Library window opens, listing the library of bookshelves
  and books available.

  For a full list of Bookreader commands and qualifiers, enter
  the following command:
  % man dxbook