200:/lib/library.c (/lib/library.c)
(public void) add_book_shelf(mixed shelf)
/*
 * Function name: add_book_shelf
 * Description:   Add book shelves to the library.  This allows books to
 *                be listed according to categories.
 * Arguments:     mixed shelf - a shelf name or array of shelf names.  These
 *                              are used both as names for the shelves when
 *                              players list shelves and also as subdirectories
 *                              (under the directory specified by
 *                              set_book_directory()) in which the book files
 *                              for each shelf will be stored.
 */
