Daniel Sparks (L), Joshua Birnbaum (2nd-L), Michael Swenson (2nd-R), and Fabrice Tourre (R), former executive director of the structured products group trading for The Goldman Sachs Group, look over books during a Senate Homeland Security and Governmental Affairs Investigations Subcommittee hearing on Capitol Hill on April 27, 2010 in Washington, D.C. - 

This final note on the way out. We told you yesterday that the trial of former Goldman Sachs trader Fabrice Tourre has started. He's defending himself against charges he sold mortgage-backed securities he knew were gonna fail.

Hear, hear. And if some of the terms do happen to slip through -- we've got your back.

Here's Paddy Hirsch's Whiteboard primer on all the terms "banned" from the trial.

Follow Kai Ryssdal at @kairyssdal