get a generic (default) control section dataframe
        
        Returns
        -------
        pandas.DataFrame : pandas.DataFrame

def get_dataframe():
        """ get a generic (default) control section dataframe
        
        Returns
        -------
        pandas.DataFrame : pandas.DataFrame

        """
        names = []
        [names.extend(line.split()) for line in CONTROL_VARIABLE_LINES]

        defaults = []
        [defaults.extend(line.split()) for line in CONTROL_DEFAULT_LINES]

        types, required,cast_defaults,formats = [],[],[],[]
        for name,default in zip(names,defaults):
            if '[' in name or ']' in name:
                required.append(False)
            else:
                required.append(True)
            v,t,f = ControlData._parse_value(default)
            types.append(t)
            formats.append(f)
            cast_defaults.append(v)
        return pandas.DataFrame({"name":names,"type":types,
                                     "value":cast_defaults,"required":required,
                                    "format":formats})