本标准介绍了单语受控词汇表的内容、显示、构造、测试、维护和管理的指南和惯例。本标准侧重于受控词汇表，这些词汇表用于表示知识组织系统中的内容对象，包括列表、同义词环、分类法和叙词表。本标准应被视为一套基于首选技术和程序的建议。然而，有时会描述可选程序，例如，在受控词汇表中显示术语。词汇控制的主要目的是实现内容对象描述的一致性，并方便检索。词汇控制主要通过三种方法完成:定义术语的范围或含义；利用等价关系将同义词和近义词联系起来；区分同形词。

This Standard presents guidelines and conventions for the contents, display, construction, testing, maintenance, and management of monolingual controlled vocabularies. This Standard focuses on controlled vocabularies that are used for the representation of content objects in knowledge organization systems including lists, synonym rings, taxonomies, and thesauri.This Standard should be regarded as a set of recommendations based on preferred techniques and procedures. Optional procedures are, however, sometimes described, e.g., for the display of terms in a controlled vocabulary. The primary purpose of vocabulary control is to achieve consistency in the description of content objects and to facilitate retrieval. Vocabulary control is accomplished by three principal methods:defining the scope, or meaning, of terms;using the equivalence relationship to link synonymous and nearly synonymous terms; anddistinguishing among homographs.