+3.5.0 - Released 3//01
+
+ * ctsim: Added tips to be displayed at startup and via the help menu.
+
+ * ctsim: Added center-detector concept. Allow for detector array
+ to be any arbitrary distance from center of scanner. As a result,
+ projection files are not incompatible with previous version of
+ CTSim.
+
+ * ctsim: Added background and SMP processing for reconstructions,
+ scanning, and rasterization.
+
+ * ctsim: Added generic threaded tasks and background manager for
+ background processing as well as taking advantage of multiple-CPU's
+ on SMP systems.
+
+ * ctsim: Added plot t-theta sampling to projection file menu.
+
+ * ctsim: Added Reconstruction with Rebinning for faster
+ divergent beam reconstructions.
+
+ * ctsim: Added import and export of DICOM image files.
+
+ * ctsim: Added PPM, PGM, and PNG file import to imagefile.
+
+ * ctsim: Added FFT/IFFT of columns of image files.
+
+ * ctsim: Added clipboard cut/copy/paste for image files.
+
+ * ctsim: Added region of interest to reconstructions.
+
+ * ctsim: Added Convert Rectangular Image to Projection files
+
+ * ctsim: Added "Verbose Logging", "Startup Tips", and
+ "Background processes" options to Preferences dialog.
+
+ * ctsim: Added plotting of projection file histograms.
+
+ * plotfile: Added scattergram plot functions
+
+ * ctsim: Added accelerator key for File-Properties
+
+ * ctsim: Improved wireframe 3-d display to remove hidden
+ surfaces.
+
+ * sgp.cpp/ezplot.cpp: Improved plotting with markers.
+
+ * views.cpp: Added out of memory checks to display for huge
+ image and projection files.
+
+ * distribution: fixed problem with documentation files not
+ being included with the distribution [Reported by Ian Kay].
+
+ * sgp.cpp: Fixed bug in drawCircle
+
+ * filter.cpp: Fixed Hanning parameter to be 0.5 rather than 0.54
+
+ * imagefile.cpp: Fixed scaling factor in fftRows
+
+ * backprojectors.cpp: Added setting of axis extent and increment
+ to reconstructions.
+
+3.0.3 - Released 2/20/01
+
+ * ctsim: Fixed core dump on Linux with OpenGL
+
+ * ctsim: Fixed context-sensitive help on Linux
+
+ * ctsim: Fixed About box on Linux
+
+3.0.2 - Released 2/20/01
+
+ * scanner.cpp: Fixed bug when number of detectors was even.
+
+ * ctsim: Improved error handling when trying to convert
+ divergent projections into polar form.
+