mac</em> file containing:
</p>
<pre class="example">usersetunits : [N,J];
</pre>
<p>we would see the following behavior:
</p>
<pre class="example">(%i1) load(&quot;unit&quot;)$
*******************************************************************
*                       Units version 0.50                        *
*          Definitions based on the NIST Reference on             *
*              Constants, Units, and Uncertainty                  *
*       Conversion factors from various sources including      