[serpentor]

The common definition of a duel is: FIGHT TO THE DEATH. Typically with weapons, not limited to pistols, and pre-dating pistols, swords were used.

And the above cited law states that it's illegal to CHALLENGE someone to a duel OR ACCEPT SUCH CHALLENGES. Probably because it's interchangable with threatening to murder someone. Note that the provided law doesn't mention the actual fighting OF a duel.