Stopthemes and Stopclasses

In addition to defining your own stopwords, you can define stopthemes, which are themes that are not indexed. This feature is available only for English and French.

You can also specify that numbers are not indexed. A class of alphanumeric characters such a numbers that is not to be indexed is a stopclass.

You create a single stoplist, to which you add the stopwords, stopthemes, and stopclasses, and specify the stoplist in the paramstring for CREATE INDEX.