本文档指定了一种表示电子文档的数字形式，以便用户能够 独立于创建电子文档的环境交换和查看电子文档 或查看或打印它们的环境。它是为那些 创建PDF文件（PDF编写器），该软件可以读取现有的PDF文件并（通常）解释其内容 显示内容（PDF阅读器），用于读取和显示PDF内容并与之交互的软件 计算机用户可能需要修改和保存PDF文件（交互式PDF处理器）和PDF 为各种其他目的读取和/或写入PDF文件的产品（PDF处理器）。（PDF） 作者和PDF阅读器是交互式PDF处理器的更专业的分类，它们都是 PDF处理器）。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 a digital form for representing electronic documents to enable users to exchange and view electronic documents independent of the environment in which they were created or the environment in which they are viewed or printed. It is intended for developers of software that creates PDF files (PDF writers), software that reads existing PDF files and (usually) interprets their contents for display (PDF readers), software that reads and displays PDF content and interacts with the computer users to possibly modify and save the PDF file (interactive PDF processors) and PDF products that read and/or write PDF files for a variety of other purposes (PDF processors). (PDF writers and PDF readers are more specialised classifications of interactive PDF processors and all are PDF processors).All current amendments available at time of purchase are included with the purchase of this document.