Double-click on TargetRed to open a new Editor tab for editing the Material, like this:
You are now looking at the Material Editor, which shares many features and conventions with Blueprints. The center of this screen is called the grid, and this is where we place all the objects that define the logic of our Materials. The initial object you see in the center of the grid screen, labeled with the name of the Material, is called a node. This node, as seen in the previous screenshot, has a series of input pins that other Material nodes can attach to in order to define this node's properties.
To give the ...
