anchor.diff:                        td 0.08 degrees
                       tr
                         td.Table--column
  +                        strong Pupil Tracking Technology
  +                      td Dark pupil with 3d model
  +                    tr
  +                      td.Table--column
                           strong Pupil Parameters
                         td 2D position + 3D eye model parameters
                       tr
                         td.Table--column
                           strong 2D Gaze Parameters
  -                      td normalised 2D gaze position
  +                      td Normalised 2D gaze position
                       tr
                         td.Table--column
                           strong 3D Gaze Parameters
  
positive.code:                     tr
                        td.Table--column
                          strong Pupil Diameter
                        td relative size in eye camera pixels + absolute size in mm through 3d eye model
                      tr
                        td.Table--column
                          strong Calibration
  
negative.code:                     tr
                        td.Table--column
                          strong Processing Latency
                        td Depending on CPU typically > 3ms
                      tr
                        td.Table--column
                          strong Slippage compensation
  