9. The exception proves this rule--we feel outrage when a journalist who crosses a territorial boundary without any signs is imprisoned for any supposed offense against the local state. Some "signposts" are culturally understood conventions that accompany entry into specialized places, such as courtrooms, office buildings, and churches. But not all signposts and boundaries dividing different rule sets are geographically or physically based. Sets of different rules may apply when the affected parties play particular roles, such as members of self-regulatory organizations, agents of corporate entities, and so forth. Henry H. Perritt Jr., Self-governing Electronic Communities 36-49, 59-60 (Apr. 1995) (on file with the Stanford Law Review). But even these roles are most often clearly marked by cues of dress, or formal signatures that give warning of the applicable rules. See text at notes 93 and 105.