A collection of OPS Documents, an OPF Package file, and other files, typically in a variety of media types, including structured text and graphics. What is an OPF file? OPF stands for Open Packaging Format. The Open Packaging Format is a standard that is a part of the EPUB eBook specification. The OPF files. Audio Players Sound Effect Features.
• What is a file extension? A file extension is the characters after the last dot in a file name. For example, in the file name 'winmail.dat', the file extension is 'dat'. It helps Windows select the right program to open the file. • We help you open your file We have a huge database of file extensions (file types) with detailed descriptions.
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