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| Expression | Attribute | Description | 
|---|---|---|
| 
                       | 
                      Not predicate. If the predicate  | |
| 
                       | 
                      And predicate. If the predicate  | |
| 
                       | 
                      Optional. Parse  | |
| 
                       | 
                      Kleene. Parse  | |
| 
                       | 
                      Plus. Parse  | |
| 
                       | 
                      Alternative. Parse  | |
| 
                       | 
                      Sequence. Parse  | |
| 
                       | 
                      Expect. Parse  | |
| 
                       | 
                      Difference. Parse  | |
| 
                       | 
                      Sequential Or. Parse  | |
| 
                       | 
                      List. Parse  | |
| 
                       | 
                      Permutation. Parse  |