LogFormatHook is not defined. Special
formatting characters are permitted. The variables are replaced as
follows: %0 by the message severity as an integer%1 by the severity as a string%2 by the log message%3 by tracing identifier string<Log FILE>, there is no
default value for LogFormat and the format is similar
to LogFormat %l:%1:%2.<Log
SYSLOG>, there is no default value for
LogFormat and the format is similar to
LogFormat %2.