Available commands about outputs:

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

output-change name [-t type] [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, just type: "key="

output-remove name

output-list [name] [-v]
  if no name, the list of outputs is printed.
  [-n] name : allows to print details about an output identified by the given name
  -v : the list of outputs with all their properties

output-types
  list all supported output types

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