A selection rule is a Progress expression; it is either true or false. When a selection rule is applied to an item, Variant Product Structure/Routing Generator tests the condition specified in the rule. If the condition is true, Variant Product Structure/Routing Generator selects the item.
Example: A certain component might only be included in the variant product structure if:
color = "Sunset Orange"
and Environment-of-use = "Easy"
Another component might be selected if:
length * width / 100 > 300
Selection rules are similar to the expressions used in sales configuration rules, and use variables, options, values, and Boolean operators.
You can use standard rules for frequently used expressions which you want to include in a number of different selection rules.