Usage: viewer [options] file ...\n\n\
Usage: mathmlviewer [options] file ...\n\n\
printHelp(){  static char* helpMsg = "\Usage: viewer [options] file ...\n\n\  -v, --version                 Output version information\n\  -h, --help                    This small usage guide\n\  --verbose[=0-3]               Display messages\n\";#ifdef HAVE_IOSTREAM  cout << helpMsg << endl;#else  printf("%s\n", helpMsg);#endif  exit(0);}