#1 (or any set number)

Refreshes the results of a search query. In this instance, you may want to first select a different timespan or to change your languages, literature types, and/or Taxa Notes.

#1 AND #2

Finds all records that appear in both set #1 and set #2.

#2 NOT #3

Finds all records in set #2 that are not in set #3.

#2 OR #3

Finds all records that are in set #2 and all records that are in set #3, including records common to both sets.

(#2 NOT #1) AND #3

Finds all records in set #2 that are not in set #1, and only those records that are in both set #2 and set #3.

(#1 OR #2 OR #4) AND #3

Finds all records in set #1, set #2, or set #4 that are also present in set #3.

Set Combination Rules

• Include a number (#) sign before each set number.

• Include Booleans (AND, OR, NOT) in set combinations.

• Do not use SAME operator or wildcards in set combinations.

• Use parentheses to override operator precedence.