y produce
degenerate facets of zero area.</dd>
   <dt><a href="qh-optq.html#QJn">QJ</a></dt>
    <dd>joggle the input to avoid cospherical and coincident
        sites.    It is less accurate than triangulated output ('Qt').</dd>
    <dt><a href="qh-optq.html#QRn">QRn</a></dt>
    <dd>randomly rotate the input with a random seed of n.  If n=0, the
        seed is the time.  If n=-1, use time for the random seed, but do
        not rotate the input.</dd>
   <dt><a href="qh-optq.html#Qu">Qu</a></dt>
    <dd>c