*Clarification at 01:36: Summon will search an item's title, abstract, and keyword information when matching results to your search terms. By selecting Include Matches in Full Text from the Refine Your Search options, it will expand that search to the content of the article/eBook/etc.
*Edit at 01:30: if the Ask a Librarian chat is offline, you can submit your question via email.
*Clarification at 02:45: A clearer explanation of the And/Or/Not limiter options from any Advanced Search:
*Edit at 0:30: The Ask a Librarian button, along with the rest of that horizontal menu, now appears above the homepage image, rather than below it, in the black bar as evidenced in the below screenshot: