extern val proxyPass : no_spaces -> proxy_target -> [Vhost];
extern val proxyPassReverse : no_spaces -> proxy_reverse_target -> [Vhost];
-{{Interface to Apache <tt>ProxyPass</tt> and <tt>ProxyPassReverse</tt>}}
+{{Interface to Apache <tt><a href="http://httpd.apache.org/docs/2.2/mod/mod_proxy.html#proxypass">ProxyPass</a></tt> and <tt><a href="http://httpd.apache.org/docs/2.2/mod/mod_proxy.html#proxypassreverse">ProxyPassReverse</a></tt>}}
+
+extern val proxyPreserveHost : bool -> [Vhost];
+{{Pass the Host header to the proxied server unmodified. <a href="http://httpd.apache.org/docs/2.2/mod/mod_proxy.html#proxypreservehost">Apache docs</a>.}}
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