This command lets you switch the member buffer to another
class. It reads the name of the new class from the minibuffer
with completion.
C b
This is the same command as C c but restricts
the classes shown in the completion list to immediate base
classes, only. If only one base class exists, this one is
immediately shown in the minibuffer.
C d
Same as C b, but for derived classes.
C p
Switch to the previous class in the class hierarchy on the
same level as the class currently displayed.
C n
Switch to the next sibling of the class in the class
tree.