Word, phrase (entire subfield) and whole phrase (entire field) versions of indexes are distinguished by whether the two-letter index label is followed by a colon (:), or by an equal sign (=), or by a letter "w" and an equal sign, respectively. See Types of searches for a detailed explanation of word, phrase, and whole phrase indexes. Whole phrase indexes are available only in Connexion. FirstSearch has only one whole phrase index—the Subject heading index (sa=).
The fields and subfield groupings are listed in numerical tag order and within a tag group, in alphabetical order by index name. In the tables, you can click the name of the search index to see the detailed description.