MISCELLANEOUS
=============

Integrate low-level X11 graphics, replace all low-level driver code in
libgraph. All the high-level graphics routines are in place.


PROPOSED MENU STRUCTURE
=======================
File
  New
    Phantom
  Open
    SDF

Process
  Simulate CT process (active only when phantom outline shown)
  Rasterize Phantom (active only when phantom outline shown)
  Reconstruct CT data (active only when raysum data is shown)

Filter
  (Various single and dual image transformations)

Compare
  Compare 2 images
    2D grayscale subtraction
    1D column plots
  Single Image statistics