an extension point for the generic operation category.
<Operation>: a generic polymorphic Operation, which is interpreted by the intended semantics (i.e. semantic profile). See
http://consumer.ruleml.org/1.02/glossary/#gloss-Operation
the Operation attribute list follows the generic pattern
an extension point for stripe skipping.
The formula role of a generic operation (<Operation>) expression,
Within Operation ...
formulas allowed to participate in generic operations include all formulas allowed in conjunctions. Typically, this will be all logical formulas.