Sometimes it is necessary to exclude a concept or an aspect of a concept. Excluding a concept or aspect can help you retrieve only those items that are relevant to your project. Exclusion is particularly useful
Being able to exclude terms in your search statement allows you to eliminate many irrelevant items from your search. Use it carefully. You may exclude items that you need.
Thesis statement:
In this example you are interested in those colonists who did NOT come from England. Therefore you want to exclude materials that discuss English colonists in America.
There is only one way to express the "exclusion" relationship in the search statement syntax.
