Finding Your Way in the Inventor Interface - Autodesk Inventor 2010: No Experience Required - page 25

One key is to position the function you want to select on the wheel over the
point you want it centered on, before you pick the point. The point where you
pick the tool is picked up as the center for Zoom or the pivot point for Orbit, for
example.
Clicking over the downward arrow at lower right lets you select a different size
wheel set or control the options of the Navigation Wheels. Selecting the X at
upper right closes the Navigation Wheels.
One tool on the Navigation Wheels that you may fi nd useful but not try other-
wise is the Rewind tool (Figure 1.21). As I mentioned earlier, the Undo function
doesn't record or affect changes to Zoom.
FIGURE 1.21 The Rewind tool
Rewind shows you a fi lm reel-style list of previous views; as you move through
them, you see the model move back to previous points of view. This is a double
benefi t because the fi lm reel allows you to move quickly to an approximate view
that you want to recall, but the onscreen display gives you the full view immedi-
ately so you can be sure you're getting what you want. In case you're wondering,
you can also press the F5 key to recall previous views, but it doesn't offer the fi lm
reel view. If you press F5 again, it goes back again. Holding the F5 key automati-
cally cycles back through previous views until you release it.
The Pan tool is presented with a hand icon. Panning means sliding the image
on the plane of the screen without changing its size or your point of view of it.
You can use Pan as a click-and-drag tool. And you can release and restart panning
while staying in the command. Pan is also available by pressing the F2 key or by
pressing and holding the wheel or the middle mouse button.