NEO_TILE_PROGRESSIVE image/wiring?

There is an image of NEO_TILE_ZIGZAG with arrows, that order i dont use. I dont turned around every second vertical row. They have all the same orientation. Now cause there is no example/documentation for Progressive i dont know how to wire it. Top to Bottom 1. vertikal row, then to to Top of the 2.vertical row? Or from left to the right of the 1st horizontal row then to the 2nd horizonal row?