Scanned face file(*.wrl)
File format : VRML ver 1.0(Virtual Reality Modeling Language ver1.0)

If you want FIDUCIAL FIT, you don't need to specify this file.

=== FIDUCIALS FIT ===
Fit digitizer fiducial points to MRI fiducial points and
get transform matrix from digitizer coordinate to MRI coordinate.

<<MRI>>     <<DIGITIZER>>
FIDUCIALS <-- FIDUCIALS(LPA, RPA, NASION)
              CHANNELS

=== FACE FIT ===
If this file is specified, fit scanned face to the surface which is extracted 
from MRI and get transform matrix from digitizer coordinate to MRI coordinate.
The coordinate system of the scanned face and the stylus must be the same.
Positioning accuracy is higher than FIDUCIAL FIT.

<<MRI>>     <<DIGITIZER>>
FIDUCIALS <-- FIDUCIALS(LPA, RPA, NASION)
FACE      <-- FACE
              CHANNELS
