Q: In the Info application on pages 229-231, what does the
frame.pack() statement on line 63 do? A: Every interface component has a preferred size, though this is
often disregarded by the layout manager used to arrange the component within
a container. Calling a frame or window's pack() method causes it to be
resized to fit the preferred size of the components that it contains. Because
the Info application does not set a size for the frame, calling pack()
sets it to an adequate size before the frame is displayed.