Server: ROAR_DRIVER by server init ROAR_DEVICE by server init DMX by dmx driver Client: ROAR_PROXY by sockets socks_proxy by sockets http_proxy by sockets https_proxy by sockets ssh_proxy by sockets TERM by password API DISPLAY by password API CDDA_DEVICE by CDDA API Both: HOME by basic API, autodetection ROAR_SERVER by basic API, server init ROAR_OPTIONS by config API USER by sockets, autodetection Compatibility layers: AUDIODEVICE by sndio MIDIDEVICE by sndio PULSE_SERVER by pulseaudio