error_trace_on

	error_trace_on()

	This routine initializes error traceback for the current program.
	Any previous traceback information will be lost

	This function requires the following include files:

	cbslib_h

	Related functions:

	error_trace_off, error_trace_get, error_trace_view_c,
	error_display(_c), error_printf_c, error_message(_c), error_mprintf_c,
	error_init(_c), intro_error

	C/C++ usage:

	error_trace_on();