Available commands about outputs:

output-create -n name -t type [-d property]*
  type : identifies the Outer (file, mule, console, ...)
  property must have the form "key=value" and depend on the type.

output-change -n name [-t type] [-d property]* [-u property]*
  type : identifies the Outer (file, mule, console, ...)
  property must have the form "key=value" and depend on the type.
  only changed parameters must be supplied
  to undefine a property, use -u.

output-remove -n name

output-list [-n name [-usage]]
  if no -n option, the list of outputs is printed.
  -usage: the list of probes using it is printed, with their state.

output-types
  list all supported output types

output-properties -t type
  list properties for that output type
  mandatory properties are flagged by an "*".
