Text files can contain plain text, but they are not limited to such. Text file refers to a type of container, while plain text refers to a kind of content. A structured storage system bundles these elements and any associated content into a single file, with data compression where appropriate. A font-embedding/replacement system to allow fonts to travel with the documents. The PDF combines three technologies: A subset of the PostScript page description programming language for generating the layout and graphics. Such files can be viewed and edited on text terminals or in simple text editors. The name text file refers to a file format that allows only plain text content with very little formatting (e.g., no bold or italic types). Each PDF file encapsulates a complete description of a fixed-layout flat document, including the text, fonts, graphics, and other information needed to display it. The Portable Document Format (PDF) is a file format used to present documents independent of application software, hardware, and operating systems.
Application/pdf, application/x-pdf, application/x-bzpdf, application/x-gzpdf