The Rules of Intervention restrict the kinds of interactions that a more technologically advanced culture (originally, that of the Huaoshy) can have with a less advanced culture. Note: just as often, these "rules" are called the "Laws of Intervention"
It should APPEAR to every type of sentient being that they have self-determination and are not being controlled by more technologically advanced life forms.
When possible, simply keep less advanced cultures ignorant of more advanced cultures.
If rule one cannot be followed, make it APPEAR that advanced cultures follow a rule by which they can only observe less advanced cultures, not interfere with the development and self-determination of other cultures.
If rule two cannot be achieved for some individuals then they should be put into into an environment where they have interactions with the social group that they perceive to be depriving them of self-determination.
While not disrupting Law #1, attempts should be made to get technologically advanced life forms off of planets with active ecosystems while maximizing the diversity of life.
As intelligent species move off of planets, a hierarchy of cultures with different technological levels should be established in which species mainly have contact with other levels that are nearest to their own.
Systems should be engineered that allow life forms to explore their own growth and potential for development rather than being concerned with Intervening in the self-determination of others.
The Three Laws should be spread through the universe.
Since biological organisms are not well-suited for travel over vast distances, artificial life forms must be created in order to help satisfy Law Three.