Boolean Operators that can be used in HeinOnline: AND, +, OR, -, NOT
If you use boolean operators they must be in ALL CAPS
Yes: "political advertising" AND abortion
No: "political advertising" and abortion
Description of the Boolean operators:
AND: The AND operator matches documents where both terms exist anywhere in the text of a single document
OR: The OR operator links two terms and finds a matching document if either of the terms exist in a document.
+ : The "+" or required operator requires that the term after the "+" symbol exist somewhere in a field of a single document.
NOT: The NOT operator excludes documents that contain the term after NOT.
- : The "-" or prohibit operator excludes documents that contain the term after the "-" symbol.