While your application runs, the OLT viewer creates a trace, which graphically represents client-server communication. This trace is drawn as a series of lines (representing client applications, servlets, EJBs, JSPs, or OBs) and event symbols (representing method calls and methods).
The OLT viewer can display up to 1000 trace lines (object instances).
To modify the appearance of the trace, select File > Preferences > OLT > Display. If you cannot see Display, click on the button next to OLT.