Hard links

[David Ryder]

Hi,
I have not been able to find an explanation why:
1. hard links are not allowed for directories, and
2. soft links to directories are not automatically removed if the target
is deleted. The link to the directory remains and is obviously useless
so why doesn't 'nix delete them too?

Many thanks to anybody who can tell me why or point me to unix
documentation explaining why - it is very elusive to find, methinks.

David