\pagebreak
\section{Controlling the Number of Threads on Multiple Nesting Levels}
\label{sec:nthrs_nesting}

The following examples demonstrate how to use the \code{OMP\_NUM\_THREADS} environment 
variable  to control the number of threads on multiple nesting levels:

\cexample{nthrs_nesting}{1}

\fexample{nthrs_nesting}{1}