0.5.3 - 5/11/2000 Added Microsoft VC compatibility Cleaned up compilation warnings 0.5.2-b5 - 5/7/2000 Continued conversion to ANSI C Removed old CRT routines 0.5.2-b4 - 5/4/2000 Renamed pictures to phantoms, objects to phantom elements Continued code cleanup 0.5.2-b3 - 4/30/200 More code cleanup with reorganizing libraries Added --log and --exp to sdf-1 Allowed negative numbers for window levels in CGI interface 0.5.2-b2 - 4/30/200 Continued code cleanup 0.5.2-b1 - 4/29/2000 Fixed a few MPI bugs Better documented, coded raysum in-memory on on-disk options 0.5.1 - 4/28/2000 Cleaned out library that wasn't being used by CTSim Modified ctsim.cgi to read in configuration file ctsim.conf 0.5.0 - 4/27/2000 First open source distribution for GNU/Linux 6/1999 Converted to GNU/Linux added MPI support via LAM library 1983-84 Developed under MS-DOS and IBM EGA graphics