protected boolean display(File helpFile) throws HelpException {
  if (helpFile.exists()) {
    loadAndWrite(helpFile);
    return true;
  }
 else {
    File notFound=new File(helpDir,NOT_FOUND);
    if (notFound.exists())     loadAndWrite(notFound);
 else     throw new HelpException("Topic not found, try 'help' for more information");
    return false;
  }
}

protected boolean display ( File helpFile ) throws HelpException { if ( helpFile . exists ( ) ) { loadAndWrite ( helpFile ) ; return true ; } else { File notFound = new File ( helpDir , NOT_FOUND ) ; if ( notFound . exists ( ) ) loadAndWrite ( notFound ) ; else throw new HelpException ( "Topic not found, try 'help' for more information" ) ; return false ; } }
displays the requested help file if it is found . if not , we first try to display the default not found message . if that is not available , we display a default message .
