status.i4.v = tlg_sanity_check_c(std::string& ret_str, [,source.e.v])

	This routine does a sanity check on the timeline data returned from the
	TLG device.

	ret_str		reference to a string.  If the sanity check fails, a
			description of the failure will be assigned to the
	source		optional. Desired source for the timeline data
			(TlgUti::Oper	 -> Active timeline front end (Default),
			 TlgUti::Test -> Test timeline front end)

	This function returns ACNET status values as follows:

	OK			success
	DIO_NO_SUCH		requested event not found in the TLG table
	CLIB_TIMEOUT		DPM returned DPM_PEND status.
	DIO_xxx			failure reading TLG module
	CLIB_CORRUPT		tha timeline data was corrupt

	This function requires the following include files:

	tlguti_h, cbslib_h, acnet_errors_h

	Related functions:

	tlg_min_cycle_length_c, tlg_cycle_length, tlg_supercycle_length,
	tlg_event_times_c, tlg_get_reset_info_c, tlg_max_cycle_length_c

	C/C++ usage:

	std::string ret_str;

	int status = tlg_sanity_check_c(ret_str)