![]() ![]() It is good practice to always include the operators (even AND) and to write them in upper case letters. You can download this information as a pdf (click on the link at the bottom of the page). In the notes you’ll find ideas on how and when to use the operators to best effect. They are logical blocks that tell a search engine what to include, exclude or combine when looking for results. Boolean operators are widely used to build search queries.
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