\b;Type \c;nan\n;
This special value indicates that a \l;variable\u cbot\var; of type \c;\l;int\u cbot\int;\n; or \c;\l;float\u cbot\float;\n; contains no number, but "nothing". 
For example, if the instruction \c;\l;receive\u cbot\receive;\n; can not get the requested information, it returns \c;nan\n; :
\c;
\s;	value = receive("Length");
\s;	if ( value == nan )  // not found ?
\s;	{
\s;		
\s;	}
\n;
\t;Dictionnary
\c;nan\n; = Not A Number 

\t;See also
\l;Programming\u cbot;, \l;types\u cbot\type; and \l;categories\u cbot\category;.