The Portable Document Format (PDF) is a file format used to present documents independent of application software, hardware, and operating systems. The format is often used for software documentation. The files are compressed and deployed in a binary format with the extension. Microsoft Compiled HTML Help is a Microsoft proprietary online help format consisting of a collection of HTML pages, an index, and other navigation tools. Application/pdf, application/x-pdf, application/x-bzpdf, application/x-gzpdf
