What is special about /home?

[Forrest Taylor]

I have a .fc file that contains:
/home/dir(/.*)? system_u:object_r:tmp_t:s0

When I create the directory, it gets user_home_dir_t and files in the
directory get user_home_t.  After I load the module, restorecon will not
change the permissions on the directory or files.  So, what is special
about those types?  I thought at first that they may be customizable
types, but they aren't listed in the file.  semanage fcontext doesn't
show them either.  Any clues?

Thanks,

Forrest