Copy the active loop normal or active vertex normal to all selected points.
Use this feature if you want the other selected normals to copy the active normal (last selected). Great for precise edit like shading the face of a character or control hair shading.
Note: This copies and applies the change at the same time.
Store in memory the active vertex/loop normal.
Note: This only copies the normals.
Paste the stored normal onto the selected points.