How do I get Synaptic's detailed description pane back?

view story

http://unix.stackexchange.com – The Synaptic package manager's main window used to look similar to this (up to at least version 0.63): Note the three panes. However, in version 0.75, it looks like this: So where did the detailed description pane (bottom right, first picture) go? And how do I reinstate it? This is really a make or break feature for me when browsing packages quickly. (HowTos)