rasmus@mindplay.dk writes:
> I was looking for the section that provides advice on which type of index
> (GIN vs GIST) to choose, and discovered that it has been removed from the
> 9.5/9.6 documentation.
That was changed because the advice was obsolete. See
https://www.postgresql.org/message-id/20150516123759.GB16100%40momjian.us
regards, tom lane