With the ON1 Photo RAW 2023.1 update, the Healing Brush tool gets a major upgrade. You could already move the source area around to find the best match, but now you can transform the repair to flip it, scale it up or down or rotate it to better match the area you’re repairing.
Healing brush
A process or set of tools for removing an object from a picture or repairing a blemish simply by painting over it. It’s like cloning, except that you don’t have to define a nearby clone ‘source’ to use for the repair – the healing tool chooses and matches pixels automatically.