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====== Constant Variable NIL ====== ====Constant Value==== **nil**. ====Description==== **nil** represents both //[[CL:Glossary:boolean]]// (and //[[CL:Glossary:generalized boolean]]//) //[[CL:Glossary:false]]// and the //[[CL:Glossary:empty list]]//. ====Examples==== <blockquote> nil <r>NIL</r> () <r>NIL</r> 'nil <r>NIL</r> '() <r>NIL</r> </blockquote> ====See Also==== * **[[CL:Constant Variables:t]]** ====Notes==== None. ====Editor Notes==== The //[[CL:Glossary:symbol]]// **nil** is also sometimes used for other purposes as well. For example, as a //[[CL:Glossary:designator]]// (//e.g.// a //[[CL:Glossary:stream designator]]//).