Setting FILE_TRACE_FLUSH to "1" (on) causes AcuLaunch to flush the error trace buffer to disk after every alias program execution. This function also ensures that in the event that the acurcl daemon terminates abnormally, all trace information, up to the last alias program execution, is captured in the error file. If this configuration variable is not used (set to 0, false, or off) and AcuLaunch terminates unexpectedly, an undefined amount of trace information will be lost. FILE_TRACE_FLUSH is set to "false" by default. Note that you can also enable trace flushing when you start the acurcl daemon by including the "-t #" command line switch in the start command (see Appendix A: The "acurcl" Command for more information).