A query is a sequence of terms separated by spaces that describe content of interest to the user making the query. A query is used by search software to provide a list of any content best matching the query. Terms comprising a query can either be words or phrases.
A word is a string of one or more letters (A-Z), numbers (0-9) or special punctuation (') but no spaces. The case of letters comprising words (whether uppercase or lowercase) is ignored: For example, Man is no different than man.
A phrase is a string of one or more words enclosed in quotes. Individual words in a phrase are separated by spaces. A phrase cannot contain another phrase. The case of letters comprising words in phrases is distinctive: For example, "Man" is different than "man".
Boolean operators (such as, 'and', 'or', or 'not') are not yet supported in queries.