When the search expression consists of a combination of terms, the order in which these terms are searched can be defined. If two operators are at the same level in the list, the digital library first searches the term at the left, then moves right. Refer to the following list for operator precedence, with the highest listed first.
| • | = |
| • | <> |
| • | < |
| • | <= |
| • | > |
| • | >= |
| • | NEAR, ADJ |
| • | WITH |
| • | SAME |
| • | AND, NOT |
| • | XOR, OR |
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