From: "Lukasz Bolikowski" <L.Bolikowski(a)icm.edu.pl>
(...)
> This feels to me essentially the same issue as
with the category
> tree: while some might prefer a strict IS-A relationship for
> categorization, in practice we have to accept that all that category >>
> membership means is some kind of hopefully human-
> understandable relationship.
(...)
A bug or two is in the sub-category tool (+) that is on cat pages -- as
compared to catscan, which was written into those cat pages with
enhancements. I think that's what the author means by "snafu" on catscan.
Catscan can make a tree out of [[:category:neurology]] that includes more
information.