UnityGame/Library/PackageCache/com.unity.shadergraph/Documentation~/Channel-Nodes.md

Channel Nodes

Combine	Flip
Creates new vectors from the four inputs R, G, B and A.	Flips the individual channels of input In selected by the Node's parameters.
Split	Swizzle
Splits the input vector In into four Float outputs R, G, B and A.	Creates a new vector from the reordered elements of the input vector.