The asterisk (*) represents zero to multiple characters.
> Enter gre* to search for words that start with Gre and end with any character or group of characters (e.g., Greece, Greek, Greeks, and Greco-roman).
> Enter Kellog S* to search for works by authors whose last name is Kellog whose first name starts with an S, and who may or may not have other initials (e.g., Kellog S, Kellog SA, and Kellog, STA).
> Enter en?oblast to search for endoblast and entoblast.