2 Added Microsoft VC compatibility
3 Cleaned up compilation warnings
6 Continued conversion to ANSI C
7 Removed old CRT routines
10 Renamed pictures to phantoms, objects to phantom elements
11 Continued code cleanup
14 More code cleanup with reorganizing libraries
15 Added --log and --exp to sdf-1
16 Allowed negative numbers for window levels in CGI interface
19 Continued code cleanup
23 Better documented, coded raysum in-memory on on-disk options
26 Cleaned out library that wasn't being used by CTSim
27 Modified ctsim.cgi to read in configuration file ctsim.conf
30 First open source distribution for GNU/Linux
33 Converted to GNU/Linux
34 added MPI support via LAM library
37 Developed under MS-DOS and IBM EGA graphics