Its is possible to track multiple vumarks in different places and still display one object thats anchored to one area.  For example i have 3 vumarks and i scan the first and it shows a teapot then i lose track of it and scan another vumark near by, is it possible to show the teapot in the location of the first vumark? and so it doesnt create another teapot, So this is kind like having 3 marks  that can be scanned but only one object is drawn in the middle lets say.