The PDF combines three technologies: A subset of the PostScript page description programming language, for generating the layout and graphics. The CDR file is a ZIP-compressed directory of several files, among them XML-files and the RIFF-structured riffdata.cdr with the familiar version signature in versions X4 (CDREvrsn) and X5 (CDRFvrsn), and a root.dat with Corel Draw X6, where the bytes 9 to 15 look slightly different. 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 in a manner independent of application software, hardware, and operating systems. CorelDraw file formats include CDR, CorelDraw Compressed (CDX), CorelDraw Template (CDT) and Corel Presentation Exchange (CMX). Application/pdf, application/x-pdf, application/x-bzpdf, application/x-gzpdfĬorelDraw is a vector graphics editor developed and marketed by Corel Corporation of Ottawa, Canada.

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