Using a mouse, you can use tmux's new (in 1.8) pane expansion. prefix + z causes the current pane to take up the entire window. prefix + z again and it goes ba

Using a mouse, you can use tmux's new (in 1.8) pane expansion. prefix + z causes the current pane to take up the entire window. prefix + z again and it goes back to normal. Essentially, it's a maximized/restore capability.