I believe that the lawful portion of the Dungeons and Dragons alignment axis is the most complex and interesting. Unfortunately, that complexity makes it the most confusing. It is easiest for us to attempt to simplify matters so that they can be easily understood, gauged, and then dealt with. For DMs and players alike, applying "Lawfulness" to this three-step process is not nearly as simple as doing so for good and evil.
Even though many can claim that good and evil are nonexistant or extremely relative, I believe that in D&D and EfU it is evident what these polarizations represent: tending to selflessness and humane actions, versus airing on the side of selfishness and immoral actions, respectively. Chaos, too, is not very difficult to decipher: the chaotic are those who act without accordance to code; whether that of society, that of themselves, or that of another person.
Law, on the other hand, has so many forms: fealty to family or tribe, abidance by common rule or decree of the land, following of moral code (either of your own, or that of another), fulfillment of duty or charge, loyalty to a master, or perhaps even unrelenting conviction in a belief or ideal. And within this small list of forms there are infinite permutations of each form: each man has a different family or tribe, each land has a different rule or decree, each teaching has a different code of morals, each institution has a different duty for its members, each retainer has a different master, and each ideal is different from the last.
Now that we have some understanding of what law is, how do we gauge it? Most often, "law" is associated with the institutions of Sanctuary; that is, the ordinances set out by the government of Sanctuary that are upheld by the Watch and other organizations intended to keep the peace of Sanctuary. Though, it is not uncommon for a "lawful" character to come in contact with these laws of the land and find conflict betwixt their own code and that of the government.
The purpose of the thread is this: how do we gauge this conflict of law? And then, how do we deal with it?
Shall we be lenient and allow lawfulness to be interpretive? Can a knight of a noble lord break the laws of Sanctuary in order to save his master's life, property, or dignity (as a good retainer does) and keep his "lawful" status? Or, by breaking the laws of the land does he, by default, become more chaotic for not finding a solution within the laws of Sanctuary?
Will Dungeon Masters deal out chaos points to that retainer for breaking the ordinance of the land, or law points for upholding his duty and proving his fealty to his master?