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.
The filename of the default search template, located inside of your
MT_DIR/search_templates directory (see the SearchTemplatePath directive).
This directive was introduced in version 4.2. This directive deprecates DefaultTemplate directive. The purpose and the behavior of the two directives are exactly the same.