substitution, respectively. You can omit the cost parameters, as in
the second version of the function; in that case they all default to 1.
<literal>levenshtein_less_equal</literal> is accelerated version of
- levenshtein functon for low values of distance. If actual distance
+ levenshtein function for low values of distance. If actual distance
is less or equal then max_d, then <literal>levenshtein_less_equal</literal>
returns accurate value of it. Otherwise this function returns value
which is greater than max_d.