Use the CASE modifier with the WORD or WILDCARD operator to perform a case-sensitive search, based on the case of the word or phrase specified.
By default, documents containing any occurrences of a search word or phrase are retrieved regardless of case. To use the CASE modifier, you simply enter the search word or phrase as you wish it to appear in retrieved documents - in all uppercase letters, in mixed uppercase and lowercase letters, or in all lowercase letters. The example in "Sample Topic Outlines" shows how you might use the word "Remembrance" with the CASE modifier in order to refer to the first word of Proust’s novel, Remembrance of Things Past.