Final answer:
The OR logical operator is used in searches when at least one of multiple specified criteria must be true, broadening the search results to include any records that meet any of the criteria.
Step-by-step explanation:
When you want to specify criteria in multiple fields, and at least one of the criteria must be true for a record to be included in the results, then the OR logical operator is used. The OR operator is utilized to connect two or more similar concepts or criteria in a search and to broaden the search results. This means that if any of the criteria are met, the record will be included. An example can be searching for articles that mention 'Java' OR 'Python', which will yield results that include either programming language.