
<A NAME=false>

<TITLE>false</TITLE></A>
<b><a href=r37_idx.html>INDEX</a></b><p><p>



<B>FALSE</B><P>
<P>
 
The symbol 
<A HREF=r37_0014.html>nil</A> and the number zero are considered 
as 
<A HREF=r37_0109.html>boolean value</A> false if used in a place where 
a boolean value is required. Most builtin operators return 

<A HREF=r37_0014.html>nil</A> as false value. Algebraic programs use better zero
. 
Note that <em>nil</em> is not printed when returned as result to 
a top level evaluation. 
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