 using a particular rule. For example, we could <code>"darken_intensity"</code> by selecting the darker of the two pixel values at each location. Or we could use a <code>"plus"</code> filter that just adds the pixel values together. Blending is a powerful technique and can be used to mimic the behaviour of other filters (e.g., a mask is really just a very particular type of blend). I’m not going to try to summarise all the different kinds of blend you can do. But I will point you to the <a href="https://g