International
Tables for Crystallography Volume G Definition and exchange of crystallographic data Edited by S. R. Hall and B. McMahon © International Union of Crystallography 2006 |
International Tables for Crystallography (2006). Vol. G. ch. 5.3, p. 509
Section 5.3.5.1.2. Mode of operation
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International Union of Crystallography, 5 Abbey Square, Chester CH1 2HU, England |
Written as a pure Fortran77 application, QUASAR requires three data streams: a file containing the request list, an input CIF and an output file. In an operating system such as Unix, it is convenient to attach the request list to the standard input channel; the first two lines of the input stream then take the form star_arc_ infile and star_out_ outfile, where infile and outfile are the file names of the input and output files, respectively.
The assignment of an output file may be replaced by a line containing star_log. When this is done, the program will test the syntactic validity of the input CIF and write any error messages to the standard output channel. In this mode the program may be used as a syntactic validator, although it is more tolerant of certain syntactic errors than vcif (Section 5.3.2.1).