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Figure 2: Special (non-login) values for ut_lin

RUNLVL_MSG -- A record with this value contains the run level of the process with the pid of ut_pid.

BOOT_MSG -- A record with this value contains the time of the system IPL.

OTIME_MSG -- A record with this value contains the time of the initial login.

NTIME_MSG -- A record with this value contains the amount of idle time.