Okay — I got it. Being a very new newbie to this blender thing, I wasn’t grasping the concept that you were just adjusting the vertices of the original edge, which then manipulates the shape of the armature created by the skin modifier. I was trying to click on the vertices of the edges in skin modifier armature. I’m not even sure if armature is the right term, but I think I saw it in the manual page for the skin modifer 🙂
