option_PDFF.outline = [
      {title: "Page 1", dest: 1},
      {title: "Page 2", dest: 2},
      {title: "Page 3", dest: 3},
      {title: "Page 4", dest: 4},
      {title: "Page 5", dest: 5},
      {title: "Page 6", dest: 6},
      {title: "Page 7", dest: 7},
      {title: "Page 8", dest: 8},
];