Watching a free tutorial from CG Cookie called Island Environment Beginner Tutorial Pt. 1. We are creating a palm tree and it has been going along nicely until we get to the leaf. We have the branch with a nice curve in wireframe view, vertex mode, and he says to "grab the curvature" of the branch and duplicate it. I think he's using "Shortest Path", but can't figure how, or what he's clicking on to pick up this curve. Can you please help me? Thanks!

Using v.2.82.7 on Win 10

This starts at about 37:30 in the video. https://www.youtube.com/watch?v=oh2hF4EulAk