RawMIDI list:
hw {
	@args.0 CARD
	@args.1 DEV
	@args.2 SUBDEV
	@args.CARD {
		type string
		default {
			@func getenv
			vars {
				0 ALSA_RAWMIDI_CARD
				1 ALSA_CARD
			}
			default {
				@func refer
				name 'defaults.rawmidi.card'
			}
		}
	}
	@args.DEV {
		type integer
		default {
			@func igetenv
			vars {
				0 ALSA_RAWMIDI_DEVICE
			}
			default {
				@func refer
				name 'defaults.rawmidi.device'
			}
		}
	}
	@args.SUBDEV {
		type integer
		default -1
	}
	type hw
	card $CARD
	device $DEV
	subdevice $SUBDEV
}
default {
	type hw
	card {
		@func getenv
		vars {
			0 ALSA_RAWMIDI_CARD
			1 ALSA_CARD
		}
		default {
			@func refer
			name 'defaults.rawmidi.card'
		}
	}
	device {
		@func igetenv
		vars {
			0 ALSA_RAWMIDI_DEVICE
		}
		default {
			@func refer
			name 'defaults.rawmidi.device'
		}
	}
}
virtual {
	@args.0 MERGE
	@args.MERGE {
		type string
		default 1
	}
	type virtual
	merge $MERGE
}