Similarly, cp[V] represents y positions within the table.
cp[V][0] = 0.
cp[V][1] = the height of the topmost horizontal rule.
- cp[V][2] = cp[V][1] + the height of the topmost column.
+ cp[V][2] = cp[V][1] + the height of the topmost row.
cp[V][3] = cp[V][2] + the height of the second-from-top horizontal rule.
and so on:
cp[V][2 * nr] = y position of the bottommost horizontal rule.