"Uh, let's see." The gears in Sunset's head turned as she considered her explanation. "Equestria's got a bunch of chivalric orders—you know, organizations of knights. They're a lot more formal and organized now than they used to be in the old days, of course, and each of 'em has different rules and traditions: who can be a member and why, who's allowed to dub in—ah, induct—a new member, ranks, and so on."