LAST month, the Supreme Court agreed to consider District of Columbia v. Heller, which struck down Washington’s strict gun ordinance as a violation of the Second Amendment’s “right to keep and bear arms.”

This will be the first time in nearly 70 years that the court has considered the Second Amendment. The outcome of the case is difficult to handicap, mainly because so little is known about the justices’ views on the lethal device at the center of the controversy: the comma. That’s right, the “small crooked point,” as Richard Mulcaster described this punctuation upstart in 1582. The official version of the Second Amendment has three of the little blighters:

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

The decision invalidating the district’s gun ban, written by Judge Laurence H. Silberman of the United States Court of Appeals for the District of Columbia Circuit, cites the second comma (the one after “state”) as proof that the Second Amendment does not merely protect the “collective” right of states to maintain their militias, but endows each citizen with an “individual” right to carry a gun, regardless of membership in the local militia.

How does a mere comma do that? According to the court, the second comma divides the amendment into two clauses: one “prefatory” and the other “operative.” On this reading, the bit about a well-regulated militia is just preliminary throat clearing; the framers don’t really get down to business until they start talking about “the right of the people ... shall not be infringed.”