<li><strong><a href="http://processing.org/reference/PVector_mag_.html"><em>mag()</em></a></strong> -- calculate the magnitude of a vector</li>

<li><strong><a href="http://processing.org/reference/PVector_normalize_.html"><em>normalize()</em></a></strong> -- normalize the vector to unit length of 1</li>

<li><strong><a href="http://processing.org/reference/PVector_limit_.html"><em>limit()</em></a></strong> -- limit the magnitude of a vector</li>

<li><strong><a href="http://processing.org/reference/PVector_dist_.html"><em>dist()</em></a></strong> -- the euclidean distance between two vectors (considered as points)</li>

<li><strong><a href="http://processing.org/reference/PVector_angleBetween_.html"><em>angleBetween()</em></a></strong> -- find the angle between two vectors</li>

<li><strong><a href="http://processing.org/reference/PVector_dot_.html"><em>dot()</em></a></strong> -- the dot product of two vectors</li>