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— You can drag a connection to a node input or output that’s already connected, which will overwrite the previous connection with the new one you’re dragging. When you do this, the connection that’s about to be overwritten appears highlighted in orange.
— You can connect any node’s RGB or Key output to as many inputs as you want, but you can only have one connection going to a node’s input. The exception to this is a node with multiple inputs, designed to combine the output of multiple nodes. These include the Parallel, Mixer, and Key Mixer nodes.
Extracting a Node
Sometimes you need to remove a node from its current position in the node tree, such that the nodes to the left and right of it automatically reconnect to one another, saving you from having to reconnect them manually. This is called extracting a node.
— Select a node, and choose Color > Nodes > Extract Current Node.
— Select a node, and press E.
Keep in mind that disconnected nodes in the node tree suspend grading altogether, so you’ll want to either reconnect that node to another part of the node tree, or delete it; you cannot leave it disconnected in the Node Editor.
Inserting a Node
If there’s a disconnected node in the Node Editor, there’s a simple way you can insert it into the node tree between any two other nodes. This also works for nodes that you’re dragging into a node tree from another source, for example, from the exposed node tree of a still in the Gallery.
— Drag a disconnected node, or a node from another node tree, onto the connection between any two other nodes in a node tree; when a plus icon appears over the node you’re dragging, drop it to insert the node.
Rearranging Node Order
The order in which nodes are connected in your tree affects the result of a grade. For example, if you boost the highlights in the first node, and then you try to isolate a portion of the picture in a second node that you now realize has been clipped, you may to need to change your order of operations to optimize your corrections.
— Command-drag any node and drop it onto another node to swap the operations within each node. The nodes won’t appear to have moved, but you should be able to tell from the node badges underneath that the operations have been reversed.