Add help button onto dialog's for reconstruction & projections.
-Consider use of wxWindows help file classes.
-
-Consider changing POL to to read tag tokens.
-Consider being able to write Phantom files as text and view as
-text in ctsim.
+Consider use of wxWindows help file classes.
-FFT filtering requires FFTW library. Add a basic FFT routine.
+FFT filtering requires FFTW library: add a basic FFT routine.