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In essence, the Rule Designer evaluates input values, or input value relationships as a requirement for an expression or Decision result to be delivered. Once evaluated and a positive identification made, that predefined output is generated. The Rule Designer allows users to define a "Rule Set" or relationship of input values, parameters and desired output for a set, by entering the values on selecting the relationships on a table. Users are even able to refer to Decision results from one set to be the requirement for another set.
As shown in the image below, users are able enter both the required input and expected outputs.