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rrom RefName RuleName OperationIndex Delta
rrom
function is used to move an operation of a rule. The
parameters are the referential name, the rule name, the index of the operation
and a delta value. The value of the index of the first operation is 1.
The correct values of the delta argument are `up' and `down'. If the value is `down', the operation is swapped in the list with the next operation. If the value is `up', the operation is swapped with the previous operation.