Collecting feature data, it would be very helpful to have a MicroStation top view roam, at the same time as the main stereo view, in order to place features accurately in relation to on another?
CR #8548 exists for this request, but has not yet been scheduled for implementation. In the meantime, make one of the other views either a Mono Left or Mono Right view, then turn off the image in that view. Then while they're roaming about in the stereo view they can do a "Quick Window Center" by hitting "right shift+first base" buttons on the 3Dmouse. Note that these mono views are still perspective views and not truly orthogonal views, so as the user progresses towards the left or right side of the model they may find it beneficial to switch to the corresponding mono view to minimize offsets due to the perspective view.
Another tactic: For a true orthogonal view, ISSD allows the user to load in an ortho and assign a view to "Mono" (as opposed to Mono Left or Right). Loading in any dummy ortho and then turning the image off in that view would provide a better/orthogonal view of the vectors.