Every tool in the environment has several different views, each
of which can display information which is pertinent to the task
at hand. You can switch to any of the available views by
clicking on the appropriate tab at the top of the tool. When
choosing a different view, the layout of the tool itself
changes. Figure 3.3 Click tabs to display different views of a
tool In tools which are browsers, different views allow you to
display different pieces of information about the same objects;
for instance, in the Class Browser you can switch from a view
which shows you information about the slots in a given Common
Lisp class to one which shows information about the initargs of
the class. In other tools, different views may show you
completely different types of related information. For example,
in the Listener you can switch from the Listener view to a view
that shows you any output that has been generated by the
Listener. All tools have a default view when you first start
them. The default view is the one which y