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====== Function MACHINE-INSTANCE ====== ====Syntax==== * **machine-instance** → //description// ====Arguments and Values==== * //description// - a //[[CL:Glossary:string]]// or **[[CL:Constant Variables:nil]]**. ====Description==== Returns a //[[CL:Glossary:string]]// that identifies the particular instance of the computer hardware on which Common Lisp is running, or **[[CL:Constant Variables:nil]]** if no such //[[CL:Glossary:string]]// can be computed. ====Examples==== <blockquote> (machine-instance) <r>"ACME.COM" //or// "S/N 123231" //or// "" //or// "AA-00-04-00-A7-A4"</r> </blockquote> ====Side Effects==== None. ====Affected By==== The machine instance, and the //[[CL:Glossary:implementation]]//. ====Exceptional Situations==== None. ====See Also==== **[[CL:Functions:machine-type|Function MACHINE-TYPE]]**, **[[CL:Functions:machine-version|Function MACHINE-VERSION]]** ====Notes==== None.