'Feed control sequences'

def control(self, ctl):

    if (ctl.upper() == 'LF'):
        self._raw(CTL_LF)
    elif (ctl.upper() == 'FF'):
        self._raw(CTL_FF)
    elif (ctl.upper() == 'CR'):
        self._raw(CTL_CR)
    elif (ctl.upper() == 'HT'):
        self._raw(CTL_HT)
    elif (ctl.upper() == 'VT'):
        self._raw(CTL_VT)
