Running the example: 1. Open a command window and type 'rotax' (return) 2. When the progam asks for the compound code enter AS19A2 3. Enter y to test for 2-fold axes as twin laws. The output is: R O T A X : Simon Parsons & Bob Gould, University of Edinburgh with additions by Richard Cooper (Oxford) and Louis Farrugia (Glasgow) Version 1st October, 2003 Enter compound code : Test 2-fold axes only (Y/N)? : Cell dimensions: 7.284 9.740 15.231 90.000 94.380 90.000 1573 data read... Direct direction 1. 0. 0. f.o.m. = 1.65 Direct direction 0. 1. 0. f.o.m. = 0.00 Reciprocal direction 0. 1. 0. f.o.m. = 0.00 Reciprocal direction -6. 0. 1. f.o.m. = 1.59 Reciprocal direction 0. 0. 1. f.o.m. = 1.65 Reciprocal direction -11. 0. 2. f.o.m. = 4.67 Direct direction 1. 0. 6. f.o.m. = 1.59 Direct direction 2. 0. 11. f.o.m. = 4.67 Rotax ends, output in rotax.out To test for other operations answer n to the question 'Test 2-fold axes only (Y/N)? :'. Then enter the angle, determinant and upper figure of merit that you'd like to use. e.g. to search for a -6 operation with an upper figure of merit of 10 the entry would be 60 -1 10 Foe a 6 fold axis it would be 60 1 10 10 is quite a high figure of merit - the default is 5.