- operator OR:
example: declaration | 131
- operator NOT:
example: rejection -102
example: affidavit !132
- phrase search operator:
example: "131 declaration"
- proximity search operator: a matching document must contain up
to, but not including, n (e.g. 5 in the example) words between
the search terms
syntax: "term1 term2 term3"~n
example: "131 declaration"~5
- strict order operator (aka operator "before"):
syntax: term1 << term2 <<term3
example: preliminary << amendment
The AND operator is the default, so "131 declaration" means that
both "131" and "declaration" must be present in a matching document.
OR operator precedence is higher than AND
Proximity distance is specified in words, adjusted for word count,
and applies to all words within quotes. For instance, "131 132
declaration"~5 query
means that there must be a span of less than 8-words which contains all 3
words.
