td width="150"><a href="html/ismatrix.html">ismatrix</a></td><td width="300">true if non scalar</td></tr>
<tr><td width="150"><a href="html/isrot.html">isrot</a></td><td width="300">true if argument is a 3x3 matrix</td></tr>
<tr><td width="150"><a href="html/isrot2.html">isrot2</a></td><td width="300">true if argument is a 3x3 matrix</td></tr>
<tr><td width="150"><a href="html/isunit.html">isunit</a></td><td width="300">true if argument is a unit vector</td></tr>
<tr><td width="150"><a href="html/isunit.htm