For performance reasons, the hash computation uses memory addresses which may change across executions. TO file - output results to file Redirect stdout to 'file'. The filename may be enclosed in single quotes. This reduces the output size when tracing. It is the normal method to determine the cause of a Qhull error.
All Qhull errors report the last point added.
TRn - rerun qhull n times Option 'TRn' reruns Qhull n times. It is usually used with ' QJn ' to determine the probability that a given joggle will fail. Ts ' will report statistics for all of the runs. Trace and output options only apply to the last run. An event trace, ' T-1 ' reports events for all runs.