Body parts that are not vital might be crippled. multiply the H(B,E,I,F,C,En)
of body-part with the ``*'' value of the crippling row. If the damage equal
or more than the current H(B,E,I,F,C,En)*crippling of a non-vital body-part
and a roll
the Amputation attribute is failed, this part is crippled,
and cannot be used anymore. See also 14.1.2.