Export a screenshot image including all nodes! with the thumnail preview for better! so you can save your material design with only one image file.
I second this! While it’s very easy to simply select the nodes, then copy the code to give to someone else, and they can paste all the nodes back in, it’s also nice to have a printed image.
A lot of people have asked for this before.
Not only for the material editor, but also for blueprint graphs in general.
So far, Epic seems to see priorities elsewhere.