We'll thank Jeff LaSor, Rhino's main developer for display related items, for this tip! When you're inside Walkabout mode (for those who haven't tried it, look it up in the help file), you're usually walking towards an object. It's moreless like you entered a room and Rhino's camera are your eyes (of course it also feels like you are a machine and you can only move forward, backwards or sideways). So as you move, you don't get to see an object as you do in Rhino's normal navigation mode, whereas the camera rotates around a target. To get the advantages of normal navigation mode (rotating around an object) while in Walkabout mode, you can activate Walkabout mode (_Walkabout) > use the arrow keys or MMB to move forward/backwards > and when you get to an object that you would like to rotate around (make sure the white cross in the middle of the screen is on the object) > press the right mouse button and then the left mouse button > and move the mouse around. You can also use CTRL+SHIFT+RMB to shift between both navigation modes.
This is what Jeff calls "auto-targeting"!