Portable Document Format (PDF) is a file format used to present documents in a manner independent of application software, hardware, and operating systems.
PDF
Every glyf inside a PDF file can have a display value and a different extraction value. This is useful because often you need to... When you create an image in a PDF file it is possible to specify that it is inverted or control the range of values.... Text is defined in the PDF file format as a display value (normally what you see onscreen) and an extraction value. It is useful... A PDF file are designed to be resolution independent – they are defined using resolution independent units so that the page will always appear... One of the most interesting things about developing the PDF to HTML convertor is the number of ideas and enhancements which arise from actual... 