There are a number of nodes which have not been documented at all, mostly related to motion tracking.
If you plan to work on this, just add a comment mentioning which nodes you'll add (so that someone else doesn't start working on the same thing). When a node is completed, I'll
cross it out.
The following nodes need to be documented:
KeyingrBM2473 Keying ScreenrBM2472 Box MaskrBM2411 MaskrBM2411 Distance KeyrBM1291 Double Edge MaskrBM2475
Movie DistortionrBM1640 FliprBM220 TransformrBM229 Stabilize 2DrBM1663 Plane Track DeformrBM1646 Corner PinrBM2978