Adding a Bookshelf to the Default Display (Tru64 UNIX)
  You can add a local bookshelf to the default display as follows:
  1.   Name your bookshelf file  library.decw_bookshelf  , which
      is the default name.
  2.   Define the DECW_BOOK environment variable to in-
      clude the directory that contains the local bookshelf.  For
      example, on a system that already has DECW_BOOK
      defined, to add /usr/mydir  to the default display, define
      DECW_BOOK as follows:
      %  setenv  DECW_BOOK  "`echo  $DECW_BOOK`  /usr/mydir"
      This definition lets you access all the books you usually
      read in addition to the books you add to the new bookshelf
      file.
      For more information about defining DECW_BOOK. see
      the section Modifying the Library Window Display
      (Tru64 UNIX)    .
  3.   Start Bookreader from the command line:
      %  dxbook
  Bookreader opens the first bookshelf it encounters.  Therefore,
  you can display the books and bookshelves within your book-
  shelf file at startup time by placing your directory at the
  beginning of the DECW_BOOK search list.  For example:
  %  setenv  DECW_BOOK  "/usr/mydir  `echo  $DECW_BOOK`"
  Additional topics:
  *   Displaying an Alternate Bookshelf Instead of the
      Default (Tru64 UNIX)
  *   Modifying the Library Window Display (Tru64
      UNIX)
  *   Creating Your Own Bookshelf File (Tru64 UNIX)
  *   Bookreader Help Topics