The cw.props Java Properties file holds a single property whose value is a whitespace-separated list of common words the RefEntry servlet ignores both when servicing a search and also when indexing RefEntry documents. In other words, when a word is included in the list of common words to ignore, a search on that word returns no results. The default common words file appears as follows:
# Words to ignore when indexing and searching # From the American Heritage Word Frequency Book, ISBN-0-395-13570-2. CommonWords = the and you that for was are with his they \ this from have one had not but what all were when there \ can your which
Note that you do not need to include words of less than three characters in the list. The servlet automatically ignores words of less than three characters.