<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def update(self, rc):
 """Add additional run control parameters Parameters rc : string, file, dictionary, optional a path to a YAML file, a file handle for a YAML file, or a dictionary describing run control configuration """

        rc = self._load_yaml(rc)
        self.store = _recursive_update(self.store, rc)