cludes an experimental option ('<a href="qh-optq.htm#Q14">Q14</a>') to merge nearly adjacent
vertices due to duplicated ridges.  If reports a topological error if merging fails to resolve the issue.  Further
work is needed.

<p>By handling round-off errors, Qhull can provide a variety of
output formats. For example, it can return the halfspace that
defines each facet ('<a href="qh-opto.htm#n">n</a>'). The
halfspaces include roundoff error. If the halfspaces were exact,
their intersection would return the or