[prefix] - : or / character indicates if following word is a global command or a path. Prefix is not required when called from root menu or from the menu relative to the called path/command.
[path] - relative path to the desired menu level. It may not be required.
command - one of the commands available at the specified menu level.
[uparam] - unnamed parameter, must be specified if the command requires it.
[params] - a sequence of named parameters followed by values (if a parameter requires a value).