This is documentation about a configuration directive, which can be placed within Movable Type’s core configuration file,
mt-config.cgi, to customize the behavior of the system.
By default, when writing to an output file, Movable Type will first write the data to a temp file, then rename that temp file. In the case that the process writing the data dies unexpectedly, this prevents the pages on your site from being erased. If you do not like this behavior (perhaps because it requires you to set directory permissions too liberally), you can use this directive to turn it off.