+.It Va Proxy Li = Ar type Ar address Ar port Oo Ar username Oc Bq experimental
+Use the proxy at the given
+.Ar address
+and
+.Ar port
+when making outgoing connections.
+The following proxy types are currently supported:
+.Bl -tag -width indent
+.It socks4
+Connects to the proxy using the SOCKS version 4 protocol.
+Optionally, a
+.Ar username
+can be supplied which will be passed on to the proxy server.
+
+.It http
+Connects to the proxy and sends a HTTP CONNECT request.
+.El
+No authentication methods are currently supported.
+