scribing file contents OR
            dicts describing subdirectories.  All files are written in binary
            mode.  Any string values are assumed to describe text files and
            will have their newlines replaced with the platform-native newline
            convention.  For example::

                {"foofile": "foocontents",
                 "bardir": {"barfile": "bar
contents"}}
        @type dirDict: C{dict}
        Ú