LMRK_DISPLAY1.pgm is the key file to see how the images are matching with the illuminated topography. When the template is built, this shows the inputs on the template from the images. Work should continue until the paired rows are nearly identical.

The file is a pgm, which is a binary bitmap. It is easy to program and write using fortran, but not easy to view. Here are some suggestions that can be used to view the file.