* Publicity, so that legal decision makers make available to the public
the rules to be observed;56
* Prospectivity, so that no one will be subject to the "threat of
retrospective change" ;57
* Understandability, or what has also been called clarity; 58
* Consistency, so that no one is subject to contradictory rules; 59
* Possibility, that is, the prohibition of "rules that require conduct
beyond the powers of the affected party"; 60
* Stability, so that rules do not change so frequently that parties cannot
adequately gauge their actions and inactions;61 and
* Congruence between the stated rules and their actual administration. 62