Trace() action

The Trace action manipulates tracing.

Parameters
With no parameters, Trace returns the current state of tracing.


 * on[,filename]
 * Turn tracing on, optionally specifying a file name.


 * off
 * Turn tracing off.

Examples
Turn on tracing. Trace(on) Turn off tracing. Trace(off) Turn on tracing, going to a particular file. Trace(on,/tmp/tracefile) Display the current state of tracing. Trace