Defining your own relations

Net Search Extender lets you define your own RELATED_TO, NARROWER, and BROADER thesaurus relations. Because each relation name must be unique, you must qualify such relations names by the addition of a unique number, like this: RELATED_TO(42).

You can use the same relation number to define a relationship of a different type, such as NARROWER(42). The number 0 is used to refer to Net Search Extender's predefined relations.