So sorry for the late reply. I always overlook my group messages. I respond much faster from any of my personal accounts! (EMCCV
The latest version of the Prototype has a vertical "scrollbar", though it doesn't work per drag and drop. It works via click! The very top and the very bottom of the track will make the menu jump all the way to the top or bottom respectively. Otherwise clicking above or below the handlebar will simply move the menu up or down by one.
Hope that helps!! ^^