Non-digital formats Instances of this class represent non-digital formats. Size in bytes. Instances of this class represent sizes in bytes. Use an rdf:value pointing to the size as a positive integer. Location Location of an object. Technology Instances of this class are technology requirements such as operating systems or browsers. Operating Systems Instances of this class are operating system versions. Browsers Instances of this class are browser versions. PC-DOS Instances of this class are versions of PC-DOS. MacOS Instances of this class are versions of MacOS. Unix Instances of this class are versions of Unix. Multi-OS Instances of this class are versions of more than one OS. None Instances of this class are no operating system at all (empty class). MS-Windows Instances of this class are versions of any browser. Netscape Communicator Instances of this class are versions of Netscape. Microsoft InternetExplorer Instances of this class are versions of Internet Explorer. Opera Instances of this class are versions of Opera. Amaya Instances of this class are versions of Amaya. Requirement A required technology. Operating system requirement A browser requirement A minimum version requirement A maximum version requirement Other Platform Requirements Other Platform Requirements