3 Portable IF (image file) format implemented to replace SDF
6 Simpilifed endian handling
9 Added support for 64-bit (IA64) CPU
10 Removed broken B-spline interpolation
11 Added support for cygwin platform under Windows 2000
12 Added support for 16-bit PNG graphics
15 Added compile-time configuration of endian order
18 Modified the raysum file format to be platform independent
21 Added Microsoft VC compatibility
22 Cleaned up compilation warnings in libgraph
25 Continued conversion to ANSI C
26 Removed old CRT routines
29 Renamed pictures to phantoms, objects to phantom elements
30 Continued code cleanup
33 More code cleanup with reorganizing libraries
34 Added --log and --exp to sdf-1
35 Allowed negative numbers for window levels in CGI interface
38 Continued code cleanup
42 Better documented, coded raysum in-memory on on-disk options
45 Cleaned out library that wasn't being used by CTSim
46 Modified ctsim.cgi to read in configuration file ctsim.conf
49 First open source distribution for GNU/Linux
52 Converted to GNU/Linux
53 added MPI support via LAM library
56 Developed under MS-DOS and IBM EGA graphics