RsGetStringDataLengthAt
RsGetStringDataLengthAt (
ResSourceLength = RsGetStringDataLengthAt (InitializerOp, 2);
ResSourceLabelLength = RsGetStringDataLengthAt (InitializerOp, 4);
ResSourceLength = RsGetStringDataLengthAt (InitializerOp, 3);
ResSourceLabelLength = RsGetStringDataLengthAt (InitializerOp, 5);