Upper frame: Eruption light curve of WZ Sge in 2001, showing a rapid rise to V = 8.2 and subsequent decay at ∼0.10 mag day^–1, punctuated by an episode of 12 “echo outbursts.” Lower frame: Expanded view of the echo episode. A freehand curve has been added to improve visibility. (Figure 1 from Patterson, J., et al. 2002, PASP, 114, 721.)