DJExpression:AdditiveExpression (see Java)
but accepts the following as a Primary expression.
Primary:
sum ( Template , EnumeratorConditionList )
Template:
Expression
EnumeratorConditionList:
EnumeratorOrCondition EnumeratorConditionListRest
EnumeratorConditionListRest:
, EnumeratorConditionList
EnumeratorOrCondition:
Constraint
Range:
DJExpression .. DJExpression
ArgumentList