def _parse_angl_line( line ):
    """Parse an AMBER frcmod ANGL line and return relevant parameters in a dictionary. AMBER uses angle and force constant, with the factor of two dropped. Here we multiply by the factor of two before returning. Units are degrees and kilocalories per mole."""

    tmp = line.split()
    params = {}
    params['smirks'] = tmp[0]
    params['k'] = str(2*float(tmp[1]))
    params['angle'] = tmp[2]
    return params