This is a format for storing graphical information, created in the CorelDRAW program. It can contain raster and vector images. It’s used exclusively in vector editors from the Corel company. For use in third-party software it’s necessary to use converters. Version 10 and earlier can be opened in vector software from Adobe. CDR can be opened also with the help of Inkscape and sK1 programs.
is a format developed by the International Digital Publishing Forum. It is characterized by the XML- and XHTM-based optional use of CSS styling. The main feature of this format is the use of reflowable text (word wrap) which makes it possible to adapt the image to different device displays. The ePub file is a zip-archive with an .epub extension.