Modifying the Library Window Display (OpenVMS) During installation, Bookreader defines the logical name DECW$BOOK to search in SYS$COMMON for the following files: LIBRARY.DECW$BOOKSHELF LIBRARY.DECW_BOOKSHELF LIBRARY.BKS If Bookreader locates one of these files, it displays the books and bookshelves listed in the file. The system manager can redefine DECW$BOOK to point to a different directory that contains a LIBRARY.DECW$BOOKSHELF file. For example: $ DEFINE DECW$BOOK DISK1:[BOOKDIR] Often, the system manager defines DECW$BOOK to be a search list. For example: $ DEFINE DECW$BOOK DISK1:[BOOKDIR], DISK2:[LOCAL_BOOKS],- _$ SYS$COMMON[DECW$BOOK] When DECW$BOOK is defined as a search list, Bookreader displays the contents of each library file it finds in the di- rectories listed in the search path, in the order in which the directories are listed in the definition. Bookreader opens and displays the contents of the first bookshelf it encounters. For example, assume DECW$BOOK points to the follow- ing two directories: SYS$COMMON:[DECW$BOOK] and DISK2:[LOCAL_BOOKS]. When you start Bookreader, the following things occur: 1. First Bookreader looks in the directory SYS$COMMON:[DECW$BOOK] for library files named LIBRARY.DECW$BOOKSHELF, LIBRARY.DECW_BOOKSHELF, and LIBRARY.BKS. If Bookreader finds a file, it displays the contents in the Library window. 2. Then Bookreader looks in the directory DISK2:[LOCAL_BOOKS] for a LIBRARY.DECW$BOOKSHELF library file. If Bookreader finds a file, it displays the contents in the Library window after the contents of the first library file it found. To see how DECW$BOOK is currently defined on the system, enter the following command: $ SHOW LOGICAL DECW$BOOK Once you decide to modify the Library window display, you can choose one of the following approaches: * Display an alternate library bookshelf instead of the default * Add another bookshelf to the default library book- shelf Both tasks require that you first create your own book- shelf file.