does pg_upgrade on Windows use junction points or hard links?

The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/9.6/static/pgupgrade.html
Description:

https://www.postgresql.org/docs/9.6/static/pgupgrade.html states that
junction points are created when --link is used.

https://msdn.microsoft.com/en-us/library/windows/desktop/aa365006(v=vs.85).aspx
says that junction points are "soft links" (symbolic links in Unix speak),
which would be disastrous if the original data directory is being purged
afterwards.

Is the documentation incorrect?
Is the program correct?