p>
<blockquote>
<dl compact>
    <dt>&nbsp;</dt>
    <dd><b>General</b></dd>
    <dt><a>qhull</a></dt>
    <dd>compute the convex hull of the input points.
        See <a href=qconvex.htm>qconvex</a>.</dd>
    <dt><a name="d">qhull d Qbb</a></dt>
    <dd>compute the Delaunay triangulation by lifting the points
        to a paraboloid.  Use option '<a href="qh-optq.htm#Qbb">Qbb</a>'
        to scale the paraboloid and improve numeric precision.
        See <a href=qdelaun.htm>qdelaunay</a>.</dd>
    <dt><a n