This is something I learned on the way to trying (unsuccessfully) to help someone with a detailing problem. Used to be that you could dynamically flip arrows on dimensions ~ inside/outside, radial/diametral/inside/outside ~ and do it while placing the dimension or even when moving it. Since WF, I haven't been able to do it and thought this functionality was lost, gone, chucked, baby with the bathwater. Well, I found it again. Now you click and drag to place a dimension. But, as you are doing so with the left mouse button, also click the right mouse button as before and watch the arrows do their flipping routine, as you are dragging the dimension. Very nice. David Janes