本文件规定了与领域无关的顶级本体（TLO）所需的特征，该本体可与较低级别的领域本体一起使用，以支持数据交换、检索、发现、集成和分析。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document specifies required characteristics of a domain-neutral top-level ontology (TLO) that can be used in tandem with domain ontologies at lower levels to support data exchange, retrieval, discovery, integration and analysis.All current amendments available at time of purchase are included with the purchase of this document.