I’m trying to follow a tutorial for material functions, particularly to make a dynamic S curve for cel shaded graphics. However, I have no idea how to make some of the nodes I see in this tutorial. In the image, the graph seems to use variable nodes for x, a, b, c, and e, which seems to set and get …

These are named reroutes, so of macros [Material Named Reroute Unreal Engine 5]