"The ILO Taxonomy was designed by the ILO Library as a tool for retrieving information from the ILO website. Its structure therefore closely reflects the work programme of the ILO and is used by ILO departments and Field Offices for describing the content of their web pages and for searching the ILO web site. It is also well suited for use as a subject classification system for arranging collections in small libraries or labour information centres. The main difference between the ILO Taxonomy and the ILO Thesaurus is its purpose. As mentioned above, the Taxonomy was designed to facilitate information retrieval from the ILO website. The Thesaurus, on the other hand, is designed to cover a much greater range of subjects and is not specific to the work of the ILO. The ILO Taxonomy is more flexible in use than the ILO Thesaurus; if necessary, the user can add, modify or remove terms. Because of its simple structure, the Taxonomy can be easily tailored to local environments. As with the ILO Thesaurus, the ILO Taxonomy can be used as a subject classification system for collection arrangement in small libraries or labour information centres. The ILO Taxonomy comprises 400 labour-related terms arranged into 25 subject groups."