Hello, JFYI so that no work will be duplicated. My colleagues and I will take care of converting the rest of the documentation to rst. Dmitri -- main(i,j){for(i=2;;i++){for(j=2;j<i;j++){if(!(i%j)){j=0;break;}}if (j){printf("%d\n",i);}}} /*Dmitri Gribenko <gribozavr at gmail.com>*/