|Heroic Action Role-Play|
You subscribe to one or several codes of honor. Each code is a fairly arbitrary set of rules and ethics that shape your behavior - usually into a somewhat archaic but very respectable gentry.
Depending on you code, this usually requires you to deal openly and fairly on a personal level. You are not required to uphold the laws of the land in detail, but must generally participate in duels, even if they are forbidden by law. Many honor codes also require chivalrousness towards the other sex and all include a couple of nuisances such as the knight's phobia against riding mares.