In this field you may optionally specify the pattern for parsing the log line timestamp. If left blank the timestamp will not be parsed. Supported placeholders: * y: Year (0001-9999) * M: Month (01-12) * d: Day (01-31) * h: Hour (00-23) * m: Minute (00-59) * s: Second (00-59) For example, consider the following line from the Zabbix agent log file: " 23480:20100328:154718.045 Zabbix agent started.