23 lines (21 with data), 601 Bytes

AnyFolder Drivers_Init = 
{
  AnyKinEqSimpleDriver KneeJoint_Init = 
  {
    AnyKinLinear lin = 
    {
      AnyRefFrame & ref0 = Main.Model.Segs.Tibia.KneeJoint;
      AnyRefFrame & ref1 = Main.Model.Segs.Femur.KneeJoint;       
      Ref = 0;
    };
    AnyKinRotational rot = 
    {
      AnyRefFrame & ref0 = Main.Model.Segs.Tibia.KneeJoint;
      AnyRefFrame & ref1 = Main.Model.Segs.Femur.KneeJoint; 
      Type = PlanarAngles;
    };
    DriverPos = {0, 0.0001, 0, 0, 0, 0};
    DriverVel = {0, 0, 0, 0, 0, 0};
    Reaction.Type = {Off, Off, Off, Off, Off, Off};
  };
};