+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
+
+
+PROPOSED HDF FILE FORMAT
+========================
+
+If the HDF library is compiled into CTSim, it will be used for the
+raysum and image files.
+
+Reconstruction Groups
+---------------------
+Group Name="Recon"
+ SubDataset="ReconParam"
+ SubGroup="Proj"
+ SubDataset="Raysum"
+ SubDataset="Geometry"
+ SubGroup="Phantom"
+ SubDataset "FImage"
+ SubGroup="Reconstr"
+ SubDataset "FImage"
+
+Image Dataset
+-------------
+Name="FImage"
+DataType: FLOAT
+Attributes:
+ "XSize" DOUBLE : X size of pixel in world coordinates
+ "YSize" DOUBLE : Y size of pixel in world coordinates
+