LogLevel’s Error Log

It is possible to specify up to 8 levels in the error log up to which level errors should be recorded. Set to “LogLevel” to specify.

Level: Meaning
emerg: Serious error that the server can not run.
alert: an error more serious than crit
crit: serious error
error: error
warn: warning
notice: notification message
info: server information
debug: information debugging

Is this basically something to do when look at “crit” and “error”?