-declarations.html#declaring-optional-variables"><i class="fa fa-check"></i>Declaring Optional Variables</a></li>
</ul></li>
<li class="chapter" data-level="5.4" data-path="vector-and-matrix-data-types.html"><a href="vector-and-matrix-data-types.html"><i class="fa fa-check"></i><b>5.4</b> Vector and Matrix Data Types</a>
<ul>
<li class="chapter" data-level="" data-path="vector-and-matrix-data-types.html"><a href="vector-and-matrix-data-types.html#indexing-from-1"><i class="fa fa-check"></i>Indexing from 1</