Opening a Book from the Command Line (Tru64 UNIX)
  You can start Bookreader and open a book directly from the
  command line.

  To open a book from the command line on Tru64 UNIX,
  start Bookreader and specify the book name as the first
  argument to the dxbook command. For example,
  % /usr/bin/dxbook /usr/lib/X11/dxbook/filename.decw_book &

  Alternatively, you can specify a bookshelf file to open. For
  example,
  % /usr/bin/dxbook /usr/lib/X11/dxbook/filename.decw_bookshelf &

  If you supply a path that is invalid, Bookreader tries to
  open the default library file, as pointed to by the DECW_
  BOOKSHELF environment variable, in the locations speci-
  fied by the DECW_BOOK environment variable. See online
  help or the book Managing Bookreader Libraries and Books
  for more information.

  For a full list of Bookreader commands and qualifiers on
  Tru64 UNIX, enter the following command:
  % man dxbook