list_param — List all the parameters name in a list of parameters
[string_list,err] = list_param(list_name)
the list of parameters. This list must have been initialize by a call to init_param.
the list of parameters name.
an error flag which is set to %T if list_name is not of type plist (this list hasn't been initialized by a call to init_param).
List all the parameters name in a list of parameters. If the err output parameter is not present, when an error occurs, a message is printed in the console.