Where can I find the system logging severity level for each trap message on ScreenOS

I would like to know where can I find the system logging severity level for each trap message on ScreenOS.

Following hyperlink describes trap types for ScreenOS. https://kb.juniper.net/InfoCenter/index?page=content&id=KB7990&actp=search

But I am not clear which one is critical , Alert, or Emergency. I just know SNMP will only alert on Critical, Alert, and Emergency level messages.

For JunOS, I can find them from http://www.juniper.net/techpubs/en_US/junos11.4/topics/reference/general/juniper-specific-snmp-v2-traps-junos-nm.html

From above link I know jnxPowerSupplyFailure is Alert and jnxFanFailure is Critical.

For ScreenOS, Where can I find the above message?

Thanks advance!