HeaderName

Syntax: HeaderName filename
Context: server config, virtual host, directory, .htaccess
Override: Indexes
Status: Base
Module: mod_autoindex
Compatibility: some features only available after 1.3.6; see text

The HeaderName directive sets the name of the file that will be inserted at the top of the index listing. Filename is the name of the file to include.

Apache 1.3.6 and earlier: The module first attempts to include filename.html as an HTML document, otherwise it will try to include filename as plain text. Filename is treated as a filesystem path relative to the directory being indexed. In no case is SSI processing done. Example:
HeaderName HEADER
when indexing the directory /web, the server will first look for the HTML file /web/HEADER.html and include it if found, otherwise it will include the plain text file /web/HEADER, if it exists.

Apache versions after 1.3.6: Filename is treated as a URI path relative to the one used to access the directory being indexed, and must resolve to a document with a major content type of "text" (e.g., text/html, text/plain, etc.). This means that filename may refer to a CGI script if the script's actual file type (as opposed to its output) is marked as text/html such as with a directive like:
    AddType text/html .cgi
Content negotiation will be performed if the MultiViews option is enabled. If filename resolves to a static text/html document (not a CGI script) and the Includes option is enabled, the file will be processed for server-side includes (see the mod_include documentation).