OLS equivalent of "AddDefaultCharset UTF-8" in httpd.conf

I've set the character encoding the VHOST's Context's default character encoding, and it works great...online, because it puts the encoding in to the HTTP response headers. But if someone were to save my web page to view offline, the character encoding is unknown. In Apache, /etc/httpd.conf could have the "AddDefaultCharset UTF-8" directive, which IIRC, adds <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> to the documents being served.

What is OLS's have an equivalent to this? Hopefully other than manually adding the <meta> element directly to every page.

Thanks for your help,
Steve <first time OP>