Here's that joint again, a little smaller,
for reference. We're gonna start out by popping up the Joint Attributes panel. You
just need to right-click on the Custom Joint 
tool. You'll see something similar to the panel below appear. The blue
"hinge" is the Pitch and the red "hinge" is the Yaw.
We're going to use this panel to adjust the limits. And because trueSpace has immediate
feedback, you might even see why I prefer to use this method over the visual one. The Min
and Max values set the limits of the "hinge". Try clicking and dragging
the mouse on the double arrow of the Min value for Pitch. You'll see that
the limit moves, either making the arc longer or shorter. Now try it for the Max
value for Pitch. Adjust these limits for the blue hinge so that it properly
sets the range of motion. The arc portion, in my testing, should run through the body if
the axis modifier runs through the body. If the axis modifier runs down the arm, then the
arc will run through the arm. You'll probably want to do this with a Front view. 
After you've adjusted the limits for the blue "hinge", you will want to
test these settings with the model. You can do this without leaving the Joint
Attributes panel just by clicking and dragging the mouse on the double arrow of the Value
parameter for Pitch. Make sure that the arm travels through its entire range of
motion without colliding with any other parts of the body. Once this is done, repeat these
steps for the red "hinge". Switch to a Top or Left view to
work with the red "hinge", depending how the arm is oriented. Use the Top
view if the arm is outstretched. Use the Left view if the arm is hanging next to
the body. Once you have a feel for adjusting the joints, every other joint will come
naturally. Continue on with the elbows, hips, and knees until you've covered all joints.
One important thing to remember, when working with joints, is how to rotate a joint around
its axis of rotation. You just have to right-click on the end of the axis modifier
as in Figure 5. You'll need to do this because, although trueSpace does a good job at
aligning the joints to their proper rotation, it isn't perfect.
For the neck, we're going to use a special 3D Spherical Joint where we'll add in
the Roll axis, which we'll cover next. As for the center joint in the chest, not
the one in the waist area, we'll want to make that one a 0D Fixed Joint so that it
has no range of motion at all.
