// allocate each sub-style and call its settings() with subset of args

  // define subset of args for a sub-style by skipping numeric args

  // one exception is 1st arg of style "table", which is non-numeric word

  // one exception is 1st two args of style "lj/coul", which are non-numeric

  // need a better way to skip these exceptions

  nstyles = 0;

  i = 0;

    strcpy(keywords[nstyles],arg[i]);

    istyle = i;

    if (strcmp(arg[i],"table") == 0) i++;

    if (strcmp(arg[i],"lj/coul") == 0) i += 2;

    i++;

    while (i < narg && !isalpha(arg[i][0])) i++;

    styles[nstyles]->settings(i-istyle-1,&arg[istyle+1]);