The following documentation comment has been logged on the website:
Page: https://www.postgresql.org/docs/9.6/static/fuzzystrmatch.html
Description:
The fuzzystrmatch documentation says that the order for the Levenshtein cost
parameters is insertion, deletion, substitution. Based on my tests with
Postgres 9.4, the order should be deletion, insertion, substitution, since
the algorithm behaves that way (this can be easily checked).