Excel97DevKit: The cbrk field contains the number of page breaks. Each element of the rgbrk structure contains three 2-byte integers: the first specifies the row (or col for vertical) of the break, the second specifies the starting column (or row for vertical), and the third specifies the ending column (or row for vertical) for the break. All row and column numbers are 1-based, and the breaks occur after the row or column. This array is sorted by row, and then by starting/ending column. No two page breaks may overlap.