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