to indicate the device, so "SY:[46,145]MYFILE.TXT", "SY:$X.X", or "SY:[1,2]X.X" (the last two examples meaning the same thing) would be a fully qualified file name under RSTS/E. On the UNIVAC Series 90 mainframe operating system VS/9, specifying a file "X" could mean either the file X in the account of that user, or could mean the file X in the library of the system manager, $TSOS. However, specifying "$S0103.X" would be a fully qualified file name. This term can also include the case where one prefixes a fully qualified file name with a specific computer name as a prefix to a file name (where the particular system permits referencing a file on another system), so long as the exact name is unambiguous. Path names Fully qualified path name (FQPN) is the full path of a resource, directory or file, stored in a computer. It is composed by the full path to the resource and its syntax depends on the operating system. In Unix-like operating systems it is represented in the following form: /root/path-to/file[OR]directory, while in DOS and Microsoft Windows it is represented in the following form: [Drive]:\path-to\file.ext[OR]directory. FQPN is also used in Networking and takes the following form: \root\FQDN\path-to\file.ext[OR]directory, where /root/ is the root directory, the first or top-most directory in a hierarchy, and, in this case, the rooted tree; FQDN is the fully qualified domain name or node. It is also used in bootstrapping, computer programming and in computer science referencing. Domain names In the sense of domain names, used in Uniform Resource Locators (URLs), a fully qualified domain name is explicitly suffixed with a dot, to eliminate the step of resolving, and to ensure that no additional suffix is added: wikipedia.com. for instance. This is an example of a fully qualified domain name. See also Filename Fully qualified domain name References Introduction to the Unix file system, including fully and partially qualified paths External links Definition of "fully qualified" at The Free Dictionary Computer files Computer programming Domain Name System