::
:: Additionally, you can set the output's level by prefixing the argument with
:: at at-sign (`@`), a level name, and a colon (`:`). Leaving out the level
:: name (i.e. using `@:` as prefix) will bump up the default level.
:: Valid level names are: *silent*, *quiet*, *normal*, *verbose*, *debug*, and
:: *maximum*, and partial names are accepted.