A Group MUST have exactly one string lv2:symbol.
A set of ports that are logically grouped together.
A group which contains exclusively inputs.
A group which contains exclusively outputs.
An element MUST have exactly one lv2:designation.
An element of a group, with a designation and optional index.
Port or group is a side chain of another.
Port or group that this group is the output of.
Input group that is the primary input of the plugin.
Output group that is the primary output of the plugin.
The left channel of a stereo audio group.
The right channel of a stereo audio group.
The center channel of a discrete audio group.
The side channel of a mid-side audio group.
The center-left channel of a 7.1 wide surround sound group.
The center-right channel of a 7.1 wide surround sound group.
The side-left channel of a 6.1 or 7.1 surround sound group.
The side-right channel of a 6.1 or 7.1 surround sound group.
The rear-left channel of a surround sound group.
The rear-right channel of a surround sound group.
The rear-center channel of a surround sound group.
The LFE channel of a *.1 surround sound group.
A 2-channel discrete stereo audio group.
A 2-channel mid-side stereo audio group.
A 4.0 (Quadraphonic) discrete surround sound group.
A 5.0 (3-2 stereo) discrete surround sound group.
A 5.1 (3-2 stereo with sub) discrete surround sound group.
A 7.1 wide discrete surround sound group.
The YuMa letter code for an Ambisonic channel.
The degree coefficient (l) of the spherical harmonic for an Ambisonic channel.
The index coefficient (m) of the spherical harmonic for an Ambisonic channel.
Ambisonic channel 0 (W): degree 0, index 0.
Ambisonic channel 1 (Y): degree 1, index -1.
Ambisonic channel 2 (Z): degree 1, index 0.
Ambisonic channel 3 (X): degree 1, index 1.
Ambisonic channel 4 (V): degree 2, index -2.
Ambisonic channel 5 (T): degree 2, index -1.
Ambisonic channel 6 (R): degree 2, index 0.
Ambisonic channel 7 (S): degree 2, index 1.
Ambisonic channel 8 (U): degree 2, index 2.
Ambisonic channel 9 (Q): degree 3, index -3.
Ambisonic channel 10 (O): degree 3, index -2.
Ambisonic channel 11 (M): degree 3, index -1.
Ambisonic channel 12 (K): degree 3, index 0.
Ambisonic channel 13 (L): degree 3, index 1.
Ambisonic channel 14 (N): degree 3, index 2.
Ambisonic channel 15 (P): degree 3, index 3.
Ambisonic B stream of horizontal order 1 and peripheral order 0.
Ambisonic B stream of horizontal order 1 and peripheral order 1.
Ambisonic B stream of horizontal order 2 and peripheral order 0.
Ambisonic B stream of horizontal order 2 and peripheral order 1.
Ambisonic B stream of horizontal order 2 and peripheral order 2.
Ambisonic B stream of horizontal order 3 and peripheral order 0.
Ambisonic B stream of horizontal order 3 and peripheral order 1.
Ambisonic B stream of horizontal order 3 and peripheral order 2.
Ambisonic B stream of horizontal order 3 and peripheral order 3.