How to change log level for StdOutLogging?

[Libor Jelínek]

I discovered that it's possible to use MyBatis internal StdOutLogger
if you are in hurry like me by

org.apache.ibatis.logging.LogFactory.useStdOutLogging();

But how to change logging level to max detail (ALL or DEBUG level)?

Thanks Libor

BWT please also you should add option to use this simple logger to
manual.