| ... | ... | @@ -25,11 +25,11 @@ To keep:             111111111.....11111111111111.........11111111111111111 | 
|  |  | How do we calculate this mask?   With the following set of operations using a | 
|  |  | `PabloBuilder pb`. | 
|  |  | ``` | 
|  |  | PabloAST * F1start = pb.createNot(pb.createAdvance(pb.createNot(Record_separators), 1); | 
|  |  | PabloAST * F1start = pb.createNot(pb.createAdvance(pb.createNot(Record_separators), 1)); | 
|  |  | PabloAST * F1follow = pb.createScanTo(F1start, Field_separators); | 
|  |  | PabloAST * F2start = pb.createAdvance(F1start, 1); | 
|  |  | PabloAST * F2start = pb.createAdvance(F1follow, 1); | 
|  |  | PabloAST * F2follow = pb.createScanTo(F2start, Field_separators); | 
|  |  | PabloAST * toDelete = pb.createIntrinsicCall(pablo::Intrinsic::ExclusiveSpan, {F1follow, F2follow}); | 
|  |  | PabloAST * toDelete = pb.createIntrinsicCall(pablo::Intrinsic::SpanUpTo, {F1follow, F2follow}); | 
|  |  | PabloAST * toKeep = pb.createNot(toDelete); | 
|  |  | ``` | 
|  |  |  | 
| ... | ... |  |