Auto define reading order
Pass through a page or document marking the reading order of each item order based on their page position.
The Auto define reading order tool (found in CircularFLO and GreenLight Tools > Accessibility Tools > Reading Order) works by assuming the reading order for a page matches the position of every object on the page.
Objects are marked sequentially from top to bottom (y axis value). Any items with the exact same top position are then compared and marked from left to right (x axis).