The "Swappable Opening Latch" feature allows you to switch the opening latch for the solids compartment to either the left or right side, making it more adaptable to different setups. For example, if you place the toilet near a wall, you can move the latch to the opposite side for easier access.
To swap sides, use the appropriate sized allen key to unbolt the level indicator and the accessories rail from either side of the toilet, they are fully interchangeable.