Why aren't the full log messages described in the FortiOS Log Reference manual?

Hi everyone, 

The full message descriptions present in the Fortigate events (e.g. Administrator X accpeted login disclaimer and logged in successfully from https(Y)) are not shown in the Log Message Reference Manual. If I go for the the log entry with the same Log ID (i.e. 32001), it only refers to successful login entry (LOG_ID_ADMIN_LOGIN_SUCC) but does not mention anything about the banner. This is really frustrating for me as I need to monitor certain events and I must how they will show in the Fortinet logs or if they will appear at all. In this case, where does acceptance of login banner appear in the log reference manual? It shows up in the GUI's Systen Events and in the log text file if I download the logs but not in the manual.