Please note that this documentation is for the most recent version of this extension. It may not be relevant for older versions. Related documentation can be found in the documentation directory of the extension.
Spot-the-Difference Advent Calendar window
This window makes it possible to add a spot-the-difference game to a competition. Upload two pictures in the tab "Image difference positions", the original and the image with the differences, and then enter the X/Y positions, the title, and the radius of each difference.