本文件规定了开放式字体格式（OFF）规范，包括TrueType和紧凑式字体格式（CFF）大纲格式。由于开放式字体格式的字体结合了这两种技术，本文档中有许多对TrueType和PostScript的引用。本文档定义了各种字体表的数据结构，并为开发人员提供了必要的详细信息，以根据本文档构建字体呈现和taxt布局/成形引擎。

This document specifies the Open Font Format (OFF) specification, including the TrueType and Compact Font Format (CFF) outline formats. Many references to both TrueType and PostScript exist throughout this document, as Open Font Format fonts combine the two technologies. The document defines data structures for variaous font tables, and provides the necessary details for developers to build a font rendering and taxt layout/shaping engines in compliance with this document.