The default is post-expansion. The filter is applied after all union links have been expanded. A pre-expansion filter is applied before union links are expanded. An object filter is applied when accessing an object other than a directory, and might be used, for example, to cause some operation to be performed on the object before it is accessed. Note, however, that all types of filters are associated with links.
Application attributes to be associated with the link.
HOST The name of the host on which the object can be found. The type of the hostname. In particular, whether the hostname is an Internet address, a domain style name, or a name in some other naming system. Note that a symbolic link is a link where the destination host is a virtual system, and the destination object name is a name relative to that virtual system. The name of the object relative to the destination system.