Channels are the keyable
attributes displayed in the Channel Box.
The Channel Box provides a convenient
way to edit a joint lattice flexor’s channels.
To edit channels with the Channel
Box
Select a joint lattice flexor node (default
name: jointFlexorn).
Set channels.
Click the name of the channel you want
to edit.
In your scene, -click
and move the mouse to the left or right. By moving the mouse, you
interactively change the value of the selected channel. As you move
the mouse, note that pressing the key gives
you finer control, and pressing the key
gives you less control.