openvpn - How to get a list of options, that can pushed to the clients?

The OpenVPN manual currently only states:

This is a partial list of options which can currently be pushed: --route, --route-gateway, --route-delay, --redirect-gateway, --ip-win32, --dhcp-option, --inactive, --ping, --ping-exit, --ping-restart, --setenv, --persist-key, --persist-tun, --echo, --comp-lzo, --socket-flags, --sndbuf, --rcvbuf

But how do I get a complete list of options I can push to clients?