A file extension is a suffix that is added to the end of a file name after a dot. It is usually two to four letters long. File extensions help Windows and other operating systems to know the standard ...
File extensions that begin with O. Ext. Type of file O Unix machine language OAZ OAZ Fax OBD Microsoft Office binder OBJ Machine language OBJ Wavefront 3D OBZ Microsoft Office wizard OCX ActiveX ...
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