The rule element defines a rule, the conditions by which the rule is met, and dependency on other rules.
- The condition element formulates an expression. The condition is met if the expression evaluates to true, or if the expression evaluates to false when the negative attribute is true.
- Multiple conditions inside a rule are listed in logical order.
- The rule element defines a rule that is referenced in a choice activity, used in an input element, or dependent on another rule. Dependencies are not affected by the order that rules are listed.