In a keyword query, the terms the user enters are used literally to retrieve any document that has all or any of those terms. The terms are not programmatically changed in any way, and match exactly only on themselves. Although effective, this mode is very restrictive. ATG Search supports this form of search through the keyword query mode (see the mode attribute of the query element), but the default behavior is to employ the strategies described in the Query Processing section later in this chapter. Users can also use query operators to achieve similar results (see the User-Entered Query Operators chapter).
