Once you create a tracing object,
you can adjust the results at any time.
Select the tracing object.
Do any of the following:
Set basic options in the Control panel.
Click the Tracing Options Dialog button in
the Control panel to view all tracing options. Alternatively, choose
Object > Live Trace > Tracing Options. Adjust
the options, and click Trace.
Use tracing presets to quickly change the
results of a tracing.