DS5: direct-searcher automatic system version 5 for small molecules running on Windows personal computers

DS5 (Direct-Searcher Automatic System Version 5), for the crystal structure analysis of small molecules on personal computers (PCs), is a new program that integrates more than 18 main programs, subroutines and mathematics/graphic libraries of the DS*SYSTEM4 package. Three features of note are: compatibility of input instruction data with the SHELX series, control of calculation sequences by subprogram names that are prepared by the user, and graphical output on the PC display with Postscript/HPGL files. All functions of DS5 are inherited from DS*SYSTEM4.