Partial article From the Genealogy Insider, "Tech Tips with Lisa Louise Cooke":
"...A prime example of technology power boosting the family historian’s research is the big daddy of them all – Google. Let’s wrap up this first installment of Tech Tips with a search tip from my book The Genealogist’s Google Toolbox (Lulu Press, 2011) that consistently delivers excellent results: the Suspension Point better known as “dot dot dot.” (...)
In search terms a Suspension Point is used to indicate a range of numbers.
Problem: When did my ancestor die? I know it was sometime between 1790 and 1830.
Answer: The Suspension Point
Search Query: “Jehu Burkhart” 1790...1830
Here’s the results page:
The beauty of the Suspension Point (...) is that it tells Google to retrieve webpages that mention Jehu Burkhart (the quotation marks indicate we want the exact phrase) between the years of 1790 and 1830. And Google takes the added step of bolding the year mentioned on the webpage so that you can quickly assess from the results list whether the page is the result you need. This tip has limitless genealogical search applications, and can thin that massive list of results you often get saddled with down to a manageable lot....."