I really like this RPG idea, but I think the two previous proposals were too vague. I've made an attempt at rewriting them. The text needs some proofreading, as this is my first attempt at a more complex ruleset (and not being a native English speaker doesn't exactly ease the production of watertight legal documents...).
Power-1.1 rule: The Province of Agora The term "Province of Agora" (PoA) refers to the state of a specific subgame described by Agoran Rules. The PoA is imaginary and self-contained; it CANNOT specify aspects of outside entities. The PoA is secured at a power threshold of 1. Power-1 rule: PoA entities The PoA comprises a set of entities called Characters. There are two types of Characters: Player Characters (PCs) and Non-Player Characters (NPCs). The Dungeon Master CAN cause this rule to amend itself to change the types of entities pertaining to the PoA Without Objection, subject to the limitations of rule ??? (The Province of Agora). Power-1 rule: The Dungeon Master The Dungeon Master is an office. His weekly report includes a summary of the changes which have occured to the PoA since the previous report. The Dungeon Master's monthly report includes a summary of the entire PoA. These summaries MAY be anything whatsoever (subject to other rules), but they SHOULD follow common sense, precedent, and Agoran consensus. Provided they don't describe any entities not belonging to the PoA, such summaries inside a Dungeon Master's report are self-ratifying. The Dungeon Master CAN by Announcement cause this rule to add or remove entities to/from the PoA or set properties of entities pertaining to the PoA, unless rules to the contrary exist. Power-1 rule: Controlling Player Characters Controller is a PoA Player Character switch tracked by the Dungeon Master with possible values of any Agora player other than the current Dungeon Master. If a PC's Controller is set to a certain player, that player "controls" the PC. A player can control at most one PC. Notwithstanding that, the Dungeon Master can't control a PC. The Dungeon Master MAY NOT cause rule ??? (The Dungeon Master) to set a Controller Switch. If a PC's Controller switch would at any point in time have an invalid value (for example after a player deregisters or the Dungeon Master changes), that PC instead ceases to exist. If a player does not control any PCs, he CAN cause this rule to create a new PC, whose Controller switch will then be set to that player. A player controlling a PC CAN suggest changes to the PoA by announcement or by message to the Dungeon Master. "<PC> takes an action" is a valid form for such suggestions. After a suggestion has been made, the Dungeon Master SHALL announce a change to the PoA. He SHOULD consider the content of the suggestion for determining the nature of the change. -- aranea