Specify the new page order using comma-separated page numbers.
For example, "3,1,2,4" will put page 3 first, then page 1, then page 2, then page 4.
Example:
Original order: 1,2,3,4,5
New order: 5,3,1,4,2
Result: Page 5 becomes first, page 3 becomes second, etc.